Revert "[ObjC] CF EventEngine client (#32077)"

This reverts commit e9a592a00f6a95c5b745c7aad41ed70c31a060b6.
diff --git a/BUILD b/BUILD
index 100c5b7..0f96f9c 100644
--- a/BUILD
+++ b/BUILD
@@ -76,26 +76,11 @@
 )
 
 config_setting(
-    name = "macos",
-    values = {"apple_platform_type": "macos"},
-)
-
-config_setting(
     name = "ios",
     values = {"apple_platform_type": "ios"},
 )
 
 config_setting(
-    name = "tvos",
-    values = {"apple_platform_type": "tvos"},
-)
-
-config_setting(
-    name = "watchos",
-    values = {"apple_platform_type": "watchos"},
-)
-
-config_setting(
     name = "systemd",
     values = {"define": "use_systemd=true"},
 )
@@ -177,13 +162,8 @@
 )
 
 config_setting(
-    name = "mac",
-    values = {"cpu": "darwin"},
-)
-
-config_setting(
     name = "mac_x86_64",
-    values = {"cpu": "darwin_x86_64"},
+    values = {"cpu": "darwin"},
 )
 
 config_setting(
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 30463a5..857d840 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -864,9 +864,6 @@
   add_dependencies(buildtests_cxx certificate_provider_registry_test)
   add_dependencies(buildtests_cxx certificate_provider_store_test)
   if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
-    add_dependencies(buildtests_cxx cf_engine_test)
-  endif()
-  if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     add_dependencies(buildtests_cxx cf_event_engine_test)
   endif()
   add_dependencies(buildtests_cxx cfstream_test)
@@ -1110,10 +1107,10 @@
   if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     add_dependencies(buildtests_cxx posix_engine_listener_utils_test)
   endif()
-  if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_POSIX)
+  if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     add_dependencies(buildtests_cxx posix_event_engine_connect_test)
   endif()
-  if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_POSIX)
+  if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     add_dependencies(buildtests_cxx posix_event_engine_test)
   endif()
   add_dependencies(buildtests_cxx promise_factory_test)
@@ -2046,8 +2043,6 @@
   src/core/lib/debug/stats.cc
   src/core/lib/debug/stats_data.cc
   src/core/lib/debug/trace.cc
-  src/core/lib/event_engine/cf_engine/cf_engine.cc
-  src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
   src/core/lib/event_engine/channel_args_endpoint_config.cc
   src/core/lib/event_engine/default_event_engine.cc
   src/core/lib/event_engine/default_event_engine_factory.cc
@@ -2741,8 +2736,6 @@
   src/core/lib/debug/stats.cc
   src/core/lib/debug/stats_data.cc
   src/core/lib/debug/trace.cc
-  src/core/lib/event_engine/cf_engine/cf_engine.cc
-  src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
   src/core/lib/event_engine/channel_args_endpoint_config.cc
   src/core/lib/event_engine/default_event_engine.cc
   src/core/lib/event_engine/default_event_engine_factory.cc
@@ -4265,8 +4258,6 @@
   src/core/lib/debug/stats.cc
   src/core/lib/debug/stats_data.cc
   src/core/lib/debug/trace.cc
-  src/core/lib/event_engine/cf_engine/cf_engine.cc
-  src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
   src/core/lib/event_engine/channel_args_endpoint_config.cc
   src/core/lib/event_engine/default_event_engine.cc
   src/core/lib/event_engine/default_event_engine_factory.cc
@@ -7453,51 +7444,11 @@
 if(gRPC_BUILD_TESTS)
 if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 
-  add_executable(cf_engine_test
-    test/core/event_engine/cf/cf_engine_test.cc
-    third_party/googletest/googletest/src/gtest-all.cc
-    third_party/googletest/googlemock/src/gmock-all.cc
-  )
-  target_compile_features(cf_engine_test PUBLIC cxx_std_14)
-  target_include_directories(cf_engine_test
-    PRIVATE
-      ${CMAKE_CURRENT_SOURCE_DIR}
-      ${CMAKE_CURRENT_SOURCE_DIR}/include
-      ${_gRPC_ADDRESS_SORTING_INCLUDE_DIR}
-      ${_gRPC_RE2_INCLUDE_DIR}
-      ${_gRPC_SSL_INCLUDE_DIR}
-      ${_gRPC_UPB_GENERATED_DIR}
-      ${_gRPC_UPB_GRPC_GENERATED_DIR}
-      ${_gRPC_UPB_INCLUDE_DIR}
-      ${_gRPC_XXHASH_INCLUDE_DIR}
-      ${_gRPC_ZLIB_INCLUDE_DIR}
-      third_party/googletest/googletest/include
-      third_party/googletest/googletest
-      third_party/googletest/googlemock/include
-      third_party/googletest/googlemock
-      ${_gRPC_PROTO_GENS_DIR}
-  )
-
-  target_link_libraries(cf_engine_test
-    ${_gRPC_BASELIB_LIBRARIES}
-    ${_gRPC_PROTOBUF_LIBRARIES}
-    ${_gRPC_ZLIB_LIBRARIES}
-    ${_gRPC_ALLTARGETS_LIBRARIES}
-    grpc_test_util
-  )
-
-
-endif()
-endif()
-if(gRPC_BUILD_TESTS)
-if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
-
   add_executable(cf_event_engine_test
+    src/core/lib/event_engine/cf_engine/cf_engine.cc
     test/core/event_engine/event_engine_test_utils.cc
     test/core/event_engine/test_suite/cf_event_engine_test.cc
     test/core/event_engine/test_suite/event_engine_test_framework.cc
-    test/core/event_engine/test_suite/posix/oracle_event_engine_posix.cc
-    test/core/event_engine/test_suite/tests/client_test.cc
     test/core/event_engine/test_suite/tests/timer_test.cc
     third_party/googletest/googletest/src/gtest-all.cc
     third_party/googletest/googlemock/src/gmock-all.cc
@@ -11530,8 +11481,6 @@
   src/core/lib/debug/stats.cc
   src/core/lib/debug/stats_data.cc
   src/core/lib/debug/trace.cc
-  src/core/lib/event_engine/cf_engine/cf_engine.cc
-  src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
   src/core/lib/event_engine/channel_args_endpoint_config.cc
   src/core/lib/event_engine/default_event_engine.cc
   src/core/lib/event_engine/default_event_engine_factory.cc
@@ -16692,7 +16641,7 @@
 endif()
 endif()
 if(gRPC_BUILD_TESTS)
-if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_POSIX)
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 
   add_executable(posix_event_engine_connect_test
     test/core/event_engine/event_engine_test_utils.cc
@@ -16735,7 +16684,7 @@
 endif()
 endif()
 if(gRPC_BUILD_TESTS)
-if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_POSIX)
+if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
 
   add_executable(posix_event_engine_test
     test/core/event_engine/event_engine_test_utils.cc
diff --git a/Makefile b/Makefile
index c46d1b7..1238773 100644
--- a/Makefile
+++ b/Makefile
@@ -1431,8 +1431,6 @@
     src/core/lib/debug/stats.cc \
     src/core/lib/debug/stats_data.cc \
     src/core/lib/debug/trace.cc \
-    src/core/lib/event_engine/cf_engine/cf_engine.cc \
-    src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc \
     src/core/lib/event_engine/channel_args_endpoint_config.cc \
     src/core/lib/event_engine/default_event_engine.cc \
     src/core/lib/event_engine/default_event_engine_factory.cc \
@@ -1980,8 +1978,6 @@
     src/core/lib/debug/stats.cc \
     src/core/lib/debug/stats_data.cc \
     src/core/lib/debug/trace.cc \
-    src/core/lib/event_engine/cf_engine/cf_engine.cc \
-    src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc \
     src/core/lib/event_engine/channel_args_endpoint_config.cc \
     src/core/lib/event_engine/default_event_engine.cc \
     src/core/lib/event_engine/default_event_engine_factory.cc \
diff --git a/build_autogenerated.yaml b/build_autogenerated.yaml
index 7604421..64ce260 100644
--- a/build_autogenerated.yaml
+++ b/build_autogenerated.yaml
@@ -670,9 +670,6 @@
   - src/core/lib/debug/stats.h
   - src/core/lib/debug/stats_data.h
   - src/core/lib/debug/trace.h
-  - src/core/lib/event_engine/cf_engine/cf_engine.h
-  - src/core/lib/event_engine/cf_engine/cfstream_endpoint.h
-  - src/core/lib/event_engine/cf_engine/cftype_unique_ref.h
   - src/core/lib/event_engine/channel_args_endpoint_config.h
   - src/core/lib/event_engine/common_closures.h
   - src/core/lib/event_engine/default_event_engine.h
@@ -1467,8 +1464,6 @@
   - src/core/lib/debug/stats.cc
   - src/core/lib/debug/stats_data.cc
   - src/core/lib/debug/trace.cc
-  - src/core/lib/event_engine/cf_engine/cf_engine.cc
-  - src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
   - src/core/lib/event_engine/channel_args_endpoint_config.cc
   - src/core/lib/event_engine/default_event_engine.cc
   - src/core/lib/event_engine/default_event_engine_factory.cc
@@ -2032,9 +2027,6 @@
   - src/core/lib/debug/stats.h
   - src/core/lib/debug/stats_data.h
   - src/core/lib/debug/trace.h
-  - src/core/lib/event_engine/cf_engine/cf_engine.h
-  - src/core/lib/event_engine/cf_engine/cfstream_endpoint.h
-  - src/core/lib/event_engine/cf_engine/cftype_unique_ref.h
   - src/core/lib/event_engine/channel_args_endpoint_config.h
   - src/core/lib/event_engine/common_closures.h
   - src/core/lib/event_engine/default_event_engine.h
@@ -2443,8 +2435,6 @@
   - src/core/lib/debug/stats.cc
   - src/core/lib/debug/stats_data.cc
   - src/core/lib/debug/trace.cc
-  - src/core/lib/event_engine/cf_engine/cf_engine.cc
-  - src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
   - src/core/lib/event_engine/channel_args_endpoint_config.cc
   - src/core/lib/event_engine/default_event_engine.cc
   - src/core/lib/event_engine/default_event_engine_factory.cc
@@ -3515,9 +3505,6 @@
   - src/core/lib/debug/stats.h
   - src/core/lib/debug/stats_data.h
   - src/core/lib/debug/trace.h
-  - src/core/lib/event_engine/cf_engine/cf_engine.h
-  - src/core/lib/event_engine/cf_engine/cfstream_endpoint.h
-  - src/core/lib/event_engine/cf_engine/cftype_unique_ref.h
   - src/core/lib/event_engine/channel_args_endpoint_config.h
   - src/core/lib/event_engine/common_closures.h
   - src/core/lib/event_engine/default_event_engine.h
@@ -3803,8 +3790,6 @@
   - src/core/lib/debug/stats.cc
   - src/core/lib/debug/stats_data.cc
   - src/core/lib/debug/trace.cc
-  - src/core/lib/event_engine/cf_engine/cf_engine.cc
-  - src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
   - src/core/lib/event_engine/channel_args_endpoint_config.cc
   - src/core/lib/event_engine/default_event_engine.cc
   - src/core/lib/event_engine/default_event_engine_factory.cc
@@ -5414,35 +5399,20 @@
   - test/core/xds/certificate_provider_store_test.cc
   deps:
   - grpc_test_util
-- name: cf_engine_test
-  gtest: true
-  build: test
-  language: c++
-  headers: []
-  src:
-  - test/core/event_engine/cf/cf_engine_test.cc
-  deps:
-  - grpc_test_util
-  platforms:
-  - linux
-  - posix
-  - mac
 - name: cf_event_engine_test
   gtest: true
   build: test
   language: c++
   headers:
+  - src/core/lib/event_engine/cf_engine/cf_engine.h
   - test/core/event_engine/event_engine_test_utils.h
   - test/core/event_engine/test_suite/event_engine_test_framework.h
-  - test/core/event_engine/test_suite/posix/oracle_event_engine_posix.h
-  - test/core/event_engine/test_suite/tests/client_test.h
   - test/core/event_engine/test_suite/tests/timer_test.h
   src:
+  - src/core/lib/event_engine/cf_engine/cf_engine.cc
   - test/core/event_engine/event_engine_test_utils.cc
   - test/core/event_engine/test_suite/cf_event_engine_test.cc
   - test/core/event_engine/test_suite/event_engine_test_framework.cc
-  - test/core/event_engine/test_suite/posix/oracle_event_engine_posix.cc
-  - test/core/event_engine/test_suite/tests/client_test.cc
   - test/core/event_engine/test_suite/tests/timer_test.cc
   deps:
   - grpc_unsecure
@@ -5451,6 +5421,7 @@
   - linux
   - posix
   - mac
+  uses_polling: false
 - name: cfstream_test
   gtest: true
   build: test
@@ -7470,9 +7441,6 @@
   - src/core/lib/debug/stats.h
   - src/core/lib/debug/stats_data.h
   - src/core/lib/debug/trace.h
-  - src/core/lib/event_engine/cf_engine/cf_engine.h
-  - src/core/lib/event_engine/cf_engine/cfstream_endpoint.h
-  - src/core/lib/event_engine/cf_engine/cftype_unique_ref.h
   - src/core/lib/event_engine/channel_args_endpoint_config.h
   - src/core/lib/event_engine/common_closures.h
   - src/core/lib/event_engine/default_event_engine.h
@@ -7741,8 +7709,6 @@
   - src/core/lib/debug/stats.cc
   - src/core/lib/debug/stats_data.cc
   - src/core/lib/debug/trace.cc
-  - src/core/lib/event_engine/cf_engine/cf_engine.cc
-  - src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
   - src/core/lib/event_engine/channel_args_endpoint_config.cc
   - src/core/lib/event_engine/default_event_engine.cc
   - src/core/lib/event_engine/default_event_engine_factory.cc
@@ -10131,6 +10097,7 @@
   platforms:
   - linux
   - posix
+  - mac
 - name: posix_event_engine_test
   gtest: true
   build: test
@@ -10156,6 +10123,7 @@
   platforms:
   - linux
   - posix
+  - mac
 - name: promise_factory_test
   gtest: true
   build: test
diff --git a/config.m4 b/config.m4
index 521353d..f58007e 100644
--- a/config.m4
+++ b/config.m4
@@ -514,8 +514,6 @@
     src/core/lib/debug/stats.cc \
     src/core/lib/debug/stats_data.cc \
     src/core/lib/debug/trace.cc \
-    src/core/lib/event_engine/cf_engine/cf_engine.cc \
-    src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc \
     src/core/lib/event_engine/channel_args_endpoint_config.cc \
     src/core/lib/event_engine/default_event_engine.cc \
     src/core/lib/event_engine/default_event_engine_factory.cc \
@@ -1457,7 +1455,6 @@
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/config)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/debug)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/event_engine)
-  PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/event_engine/cf_engine)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/event_engine/posix_engine)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/event_engine/windows)
   PHP_ADD_BUILD_DIR($ext_builddir/src/core/lib/experiments)
diff --git a/config.w32 b/config.w32
index d7c5686..ec4e43a 100644
--- a/config.w32
+++ b/config.w32
@@ -479,8 +479,6 @@
     "src\\core\\lib\\debug\\stats.cc " +
     "src\\core\\lib\\debug\\stats_data.cc " +
     "src\\core\\lib\\debug\\trace.cc " +
-    "src\\core\\lib\\event_engine\\cf_engine\\cf_engine.cc " +
-    "src\\core\\lib\\event_engine\\cf_engine\\cfstream_endpoint.cc " +
     "src\\core\\lib\\event_engine\\channel_args_endpoint_config.cc " +
     "src\\core\\lib\\event_engine\\default_event_engine.cc " +
     "src\\core\\lib\\event_engine\\default_event_engine_factory.cc " +
@@ -1589,7 +1587,6 @@
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\config");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\debug");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\event_engine");
-  FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\event_engine\\cf_engine");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\event_engine\\posix_engine");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\event_engine\\windows");
   FSO.CreateFolder(base_dir+"\\ext\\grpc\\src\\core\\lib\\experiments");
diff --git a/gRPC-C++.podspec b/gRPC-C++.podspec
index b4ecb64..f5b198c 100644
--- a/gRPC-C++.podspec
+++ b/gRPC-C++.podspec
@@ -743,9 +743,6 @@
                       'src/core/lib/debug/stats.h',
                       'src/core/lib/debug/stats_data.h',
                       'src/core/lib/debug/trace.h',
-                      'src/core/lib/event_engine/cf_engine/cf_engine.h',
-                      'src/core/lib/event_engine/cf_engine/cfstream_endpoint.h',
-                      'src/core/lib/event_engine/cf_engine/cftype_unique_ref.h',
                       'src/core/lib/event_engine/channel_args_endpoint_config.h',
                       'src/core/lib/event_engine/common_closures.h',
                       'src/core/lib/event_engine/default_event_engine.h',
@@ -1768,9 +1765,6 @@
                               'src/core/lib/debug/stats.h',
                               'src/core/lib/debug/stats_data.h',
                               'src/core/lib/debug/trace.h',
-                              'src/core/lib/event_engine/cf_engine/cf_engine.h',
-                              'src/core/lib/event_engine/cf_engine/cfstream_endpoint.h',
-                              'src/core/lib/event_engine/cf_engine/cftype_unique_ref.h',
                               'src/core/lib/event_engine/channel_args_endpoint_config.h',
                               'src/core/lib/event_engine/common_closures.h',
                               'src/core/lib/event_engine/default_event_engine.h',
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 8f7bfae..76f6dab 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -1146,11 +1146,6 @@
                       'src/core/lib/debug/stats_data.h',
                       'src/core/lib/debug/trace.cc',
                       'src/core/lib/debug/trace.h',
-                      'src/core/lib/event_engine/cf_engine/cf_engine.cc',
-                      'src/core/lib/event_engine/cf_engine/cf_engine.h',
-                      'src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc',
-                      'src/core/lib/event_engine/cf_engine/cfstream_endpoint.h',
-                      'src/core/lib/event_engine/cf_engine/cftype_unique_ref.h',
                       'src/core/lib/event_engine/channel_args_endpoint_config.cc',
                       'src/core/lib/event_engine/channel_args_endpoint_config.h',
                       'src/core/lib/event_engine/common_closures.h',
@@ -2488,9 +2483,6 @@
                               'src/core/lib/debug/stats.h',
                               'src/core/lib/debug/stats_data.h',
                               'src/core/lib/debug/trace.h',
-                              'src/core/lib/event_engine/cf_engine/cf_engine.h',
-                              'src/core/lib/event_engine/cf_engine/cfstream_endpoint.h',
-                              'src/core/lib/event_engine/cf_engine/cftype_unique_ref.h',
                               'src/core/lib/event_engine/channel_args_endpoint_config.h',
                               'src/core/lib/event_engine/common_closures.h',
                               'src/core/lib/event_engine/default_event_engine.h',
diff --git a/grpc.gemspec b/grpc.gemspec
index 4fd6a82..f0241ed 100644
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -1052,11 +1052,6 @@
   s.files += %w( src/core/lib/debug/stats_data.h )
   s.files += %w( src/core/lib/debug/trace.cc )
   s.files += %w( src/core/lib/debug/trace.h )
-  s.files += %w( src/core/lib/event_engine/cf_engine/cf_engine.cc )
-  s.files += %w( src/core/lib/event_engine/cf_engine/cf_engine.h )
-  s.files += %w( src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc )
-  s.files += %w( src/core/lib/event_engine/cf_engine/cfstream_endpoint.h )
-  s.files += %w( src/core/lib/event_engine/cf_engine/cftype_unique_ref.h )
   s.files += %w( src/core/lib/event_engine/channel_args_endpoint_config.cc )
   s.files += %w( src/core/lib/event_engine/channel_args_endpoint_config.h )
   s.files += %w( src/core/lib/event_engine/common_closures.h )
diff --git a/grpc.gyp b/grpc.gyp
index a96b3fc..d140393 100644
--- a/grpc.gyp
+++ b/grpc.gyp
@@ -735,8 +735,6 @@
         'src/core/lib/debug/stats.cc',
         'src/core/lib/debug/stats_data.cc',
         'src/core/lib/debug/trace.cc',
-        'src/core/lib/event_engine/cf_engine/cf_engine.cc',
-        'src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc',
         'src/core/lib/event_engine/channel_args_endpoint_config.cc',
         'src/core/lib/event_engine/default_event_engine.cc',
         'src/core/lib/event_engine/default_event_engine_factory.cc',
@@ -1225,8 +1223,6 @@
         'src/core/lib/debug/stats.cc',
         'src/core/lib/debug/stats_data.cc',
         'src/core/lib/debug/trace.cc',
-        'src/core/lib/event_engine/cf_engine/cf_engine.cc',
-        'src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc',
         'src/core/lib/event_engine/channel_args_endpoint_config.cc',
         'src/core/lib/event_engine/default_event_engine.cc',
         'src/core/lib/event_engine/default_event_engine_factory.cc',
@@ -1738,8 +1734,6 @@
         'src/core/lib/debug/stats.cc',
         'src/core/lib/debug/stats_data.cc',
         'src/core/lib/debug/trace.cc',
-        'src/core/lib/event_engine/cf_engine/cf_engine.cc',
-        'src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc',
         'src/core/lib/event_engine/channel_args_endpoint_config.cc',
         'src/core/lib/event_engine/default_event_engine.cc',
         'src/core/lib/event_engine/default_event_engine_factory.cc',
diff --git a/package.xml b/package.xml
index 3481ab2..b18f1c7 100644
--- a/package.xml
+++ b/package.xml
@@ -1034,11 +1034,6 @@
     <file baseinstalldir="/" name="src/core/lib/debug/stats_data.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/debug/trace.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/debug/trace.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/event_engine/cf_engine/cf_engine.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/event_engine/cf_engine/cf_engine.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/event_engine/cf_engine/cfstream_endpoint.h" role="src" />
-    <file baseinstalldir="/" name="src/core/lib/event_engine/cf_engine/cftype_unique_ref.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/event_engine/channel_args_endpoint_config.cc" role="src" />
     <file baseinstalldir="/" name="src/core/lib/event_engine/channel_args_endpoint_config.h" role="src" />
     <file baseinstalldir="/" name="src/core/lib/event_engine/common_closures.h" role="src" />
diff --git a/src/core/BUILD b/src/core/BUILD
index 2496074..3a7531c 100644
--- a/src/core/BUILD
+++ b/src/core/BUILD
@@ -2068,32 +2068,16 @@
 
 grpc_cc_library(
     name = "cf_event_engine",
-    srcs = [
-        "lib/event_engine/cf_engine/cf_engine.cc",
-        "lib/event_engine/cf_engine/cfstream_endpoint.cc",
-    ],
-    hdrs = [
-        "lib/event_engine/cf_engine/cf_engine.h",
-        "lib/event_engine/cf_engine/cfstream_endpoint.h",
-        "lib/event_engine/cf_engine/cftype_unique_ref.h",
-    ],
-    external_deps = ["absl/strings:str_format"],
+    srcs = ["lib/event_engine/cf_engine/cf_engine.cc"],
+    hdrs = ["lib/event_engine/cf_engine/cf_engine.h"],
     deps = [
         "event_engine_common",
-        "event_engine_tcp_socket_utils",
         "event_engine_trace",
         "event_engine_utils",
         "init_internally",
-        "posix_event_engine_closure",
-        "posix_event_engine_event_poller",
-        "posix_event_engine_lockfree_event",
         "posix_event_engine_timer_manager",
-        "ref_counted",
-        "strerror",
         "//:event_engine_base_hdrs",
         "//:gpr",
-        "//:ref_counted_ptr",
-        "//:sockaddr_utils",
     ],
 )
 
@@ -2166,9 +2150,6 @@
         "//:windows": ["windows_event_engine"],
         "//:windows_msvc": ["windows_event_engine"],
         "//:windows_other": ["windows_event_engine"],
-        "//:ios": ["cf_event_engine"],
-        "//:tvos": ["cf_event_engine"],
-        "//:watchos": ["cf_event_engine"],
         "//conditions:default": ["posix_event_engine"],
     }],
     deps = [
diff --git a/src/core/lib/event_engine/cf_engine/cf_engine.cc b/src/core/lib/event_engine/cf_engine/cf_engine.cc
index 11d933e..4a33d84 100644
--- a/src/core/lib/event_engine/cf_engine/cf_engine.cc
+++ b/src/core/lib/event_engine/cf_engine/cf_engine.cc
@@ -1,4 +1,4 @@
-// Copyright 2023 The gRPC Authors
+// Copyright 2022 The gRPC Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,12 +16,8 @@
 
 #ifdef GPR_APPLE
 
-#include <CoreFoundation/CoreFoundation.h>
-
 #include "src/core/lib/event_engine/cf_engine/cf_engine.h"
-#include "src/core/lib/event_engine/cf_engine/cfstream_endpoint.h"
 #include "src/core/lib/event_engine/posix_engine/timer_manager.h"
-#include "src/core/lib/event_engine/tcp_socket_utils.h"
 #include "src/core/lib/event_engine/trace.h"
 #include "src/core/lib/event_engine/utils.h"
 #include "src/core/lib/gprpp/crash.h"
@@ -39,7 +35,7 @@
     GRPC_EVENT_ENGINE_TRACE("CFEventEngine:%p executing callback:%s", engine,
                             HandleToString(handle).c_str());
     {
-      grpc_core::MutexLock lock(&engine->task_mu_);
+      grpc_core::MutexLock lock(&engine->mu_);
       engine->known_handles_.erase(handle);
     }
     cb();
@@ -52,7 +48,7 @@
 
 CFEventEngine::~CFEventEngine() {
   {
-    grpc_core::MutexLock lock(&task_mu_);
+    grpc_core::MutexLock lock(&mu_);
     if (GRPC_TRACE_FLAG_ENABLED(grpc_event_engine_trace)) {
       for (auto handle : known_handles_) {
         gpr_log(GPR_ERROR,
@@ -76,76 +72,14 @@
 }
 
 CFEventEngine::ConnectionHandle CFEventEngine::Connect(
-    OnConnectCallback on_connect, const ResolvedAddress& addr,
-    const EndpointConfig& /* args */, MemoryAllocator memory_allocator,
-    Duration timeout) {
-  auto endpoint_ptr = new CFStreamEndpoint(
-      std::static_pointer_cast<CFEventEngine>(shared_from_this()),
-      std::move(memory_allocator));
-
-  ConnectionHandle handle{reinterpret_cast<intptr_t>(endpoint_ptr), 0};
-  {
-    grpc_core::MutexLock lock(&conn_mu_);
-    conn_handles_.insert(handle);
-  }
-
-  auto deadline_timer =
-      RunAfter(timeout, [handle, that = std::static_pointer_cast<CFEventEngine>(
-                                     shared_from_this())]() {
-        that->CancelConnectInternal(
-            handle, absl::DeadlineExceededError("Connect timed out"));
-      });
-
-  auto on_connect2 =
-      [that = std::static_pointer_cast<CFEventEngine>(shared_from_this()),
-       deadline_timer, handle,
-       on_connect = std::move(on_connect)](absl::Status status) mutable {
-        // best effort canceling deadline timer
-        that->Cancel(deadline_timer);
-
-        {
-          grpc_core::MutexLock lock(&that->conn_mu_);
-          that->conn_handles_.erase(handle);
-        }
-
-        auto endpoint_ptr = reinterpret_cast<CFStreamEndpoint*>(handle.keys[0]);
-
-        if (!status.ok()) {
-          on_connect(std::move(status));
-          delete endpoint_ptr;
-          return;
-        }
-
-        on_connect(std::unique_ptr<EventEngine::Endpoint>(endpoint_ptr));
-      };
-
-  endpoint_ptr->Connect(std::move(on_connect2), addr);
-
-  return handle;
+    OnConnectCallback /* on_connect */, const ResolvedAddress& /* addr */,
+    const EndpointConfig& /* args */, MemoryAllocator /* memory_allocator */,
+    Duration /* timeout */) {
+  grpc_core::Crash("unimplemented");
 }
 
-bool CFEventEngine::CancelConnect(ConnectionHandle handle) {
-  CancelConnectInternal(handle, absl::CancelledError("CancelConnect"));
-  // on_connect will always be called, even if cancellation is successful
-  return false;
-}
-
-bool CFEventEngine::CancelConnectInternal(ConnectionHandle handle,
-                                          absl::Status status) {
-  grpc_core::MutexLock lock(&conn_mu_);
-
-  if (!conn_handles_.contains(handle)) {
-    GRPC_EVENT_ENGINE_TRACE(
-        "Unknown connection handle: %s",
-        HandleToString<EventEngine::ConnectionHandle>(handle).c_str());
-    return false;
-  }
-  conn_handles_.erase(handle);
-
-  // keep the `conn_mu_` lock to prevent endpoint_ptr from being deleted
-
-  auto endpoint_ptr = reinterpret_cast<CFStreamEndpoint*>(handle.keys[0]);
-  return endpoint_ptr->CancelConnect(status);
+bool CFEventEngine::CancelConnect(ConnectionHandle /* handle */) {
+  grpc_core::Crash("unimplemented");
 }
 
 bool CFEventEngine::IsWorkerThread() { grpc_core::Crash("unimplemented"); }
@@ -155,12 +89,12 @@
   grpc_core::Crash("unimplemented");
 }
 
-void CFEventEngine::Run(EventEngine::Closure* closure) {
-  executor_->Run(closure);
+void CFEventEngine::Run(EventEngine::Closure* /* closure */) {
+  grpc_core::Crash("unimplemented");
 }
 
-void CFEventEngine::Run(absl::AnyInvocable<void()> closure) {
-  executor_->Run(std::move(closure));
+void CFEventEngine::Run(absl::AnyInvocable<void()> /* closure */) {
+  grpc_core::Crash("unimplemented");
 }
 
 EventEngine::TaskHandle CFEventEngine::RunAfter(Duration when,
@@ -174,7 +108,7 @@
 }
 
 bool CFEventEngine::Cancel(TaskHandle handle) {
-  grpc_core::MutexLock lock(&task_mu_);
+  grpc_core::MutexLock lock(&mu_);
   if (!known_handles_.contains(handle)) return false;
   auto* cd = reinterpret_cast<Closure*>(handle.keys[0]);
   bool r = timer_manager_.TimerCancel(&cd->timer);
@@ -191,7 +125,7 @@
   cd->engine = this;
   EventEngine::TaskHandle handle{reinterpret_cast<intptr_t>(cd),
                                  aba_token_.fetch_add(1)};
-  grpc_core::MutexLock lock(&task_mu_);
+  grpc_core::MutexLock lock(&mu_);
   known_handles_.insert(handle);
   cd->handle = handle;
   GRPC_EVENT_ENGINE_TRACE("CFEventEngine:%p scheduling callback:%s", this,
diff --git a/src/core/lib/event_engine/cf_engine/cf_engine.h b/src/core/lib/event_engine/cf_engine/cf_engine.h
index 57aaa69..c4f58e7 100644
--- a/src/core/lib/event_engine/cf_engine/cf_engine.h
+++ b/src/core/lib/event_engine/cf_engine/cf_engine.h
@@ -1,4 +1,4 @@
-// Copyright 2023 The gRPC Authors
+// Copyright 2022 The gRPC Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -20,9 +20,6 @@
 #include <grpc/event_engine/event_engine.h>
 
 #include "src/core/lib/event_engine/handle_containers.h"
-#include "src/core/lib/event_engine/posix_engine/event_poller.h"
-#include "src/core/lib/event_engine/posix_engine/lockfree_event.h"
-#include "src/core/lib/event_engine/posix_engine/posix_engine_closure.h"
 #include "src/core/lib/event_engine/posix_engine/timer_manager.h"
 #include "src/core/lib/gprpp/sync.h"
 #include "src/core/lib/surface/init_internally.h"
@@ -31,7 +28,6 @@
 namespace experimental {
 
 class CFEventEngine : public EventEngine,
-                      public Scheduler,
                       public grpc_core::KeepsGrpcInitialized {
  public:
   CFEventEngine();
@@ -64,16 +60,9 @@
   struct Closure;
   EventEngine::TaskHandle RunAfterInternal(Duration when,
                                            absl::AnyInvocable<void()> cb);
-
-  bool CancelConnectInternal(ConnectionHandle handle, absl::Status status);
-
-  grpc_core::Mutex task_mu_;
-  TaskHandleSet known_handles_ ABSL_GUARDED_BY(task_mu_);
+  grpc_core::Mutex mu_;
+  TaskHandleSet known_handles_ ABSL_GUARDED_BY(mu_);
   std::atomic<intptr_t> aba_token_{0};
-
-  grpc_core::Mutex conn_mu_;
-  ConnectionHandleSet conn_handles_ ABSL_GUARDED_BY(conn_mu_);
-
   std::shared_ptr<ThreadPool> executor_;
   TimerManager timer_manager_;
 };
diff --git a/src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc b/src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
deleted file mode 100644
index f77a626..0000000
--- a/src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc
+++ /dev/null
@@ -1,354 +0,0 @@
-// Copyright 2023 The gRPC Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include <grpc/support/port_platform.h>
-
-#ifdef GPR_APPLE
-
-#include "src/core/lib/event_engine/cf_engine/cfstream_endpoint.h"
-#include "src/core/lib/event_engine/trace.h"
-#include "src/core/lib/gprpp/strerror.h"
-
-namespace grpc_event_engine {
-namespace experimental {
-
-namespace {
-
-int kDefaultReadBufferSize = 8192;
-
-absl::Status CFErrorToStatus(CFTypeUniqueRef<CFErrorRef> cf_error) {
-  if (cf_error == nullptr) {
-    return absl::OkStatus();
-  }
-  CFErrorDomain cf_domain = CFErrorGetDomain((cf_error));
-  CFIndex code = CFErrorGetCode((cf_error));
-  CFTypeUniqueRef<CFStringRef> cf_desc = CFErrorCopyDescription((cf_error));
-  char domain_buf[256];
-  char desc_buf[256];
-  CFStringGetCString(cf_domain, domain_buf, 256, kCFStringEncodingUTF8);
-  CFStringGetCString(cf_desc, desc_buf, 256, kCFStringEncodingUTF8);
-  return absl::Status(absl::StatusCode::kUnknown,
-                      absl::StrFormat("(domain:%s, code:%ld, description:%s)",
-                                      domain_buf, code, desc_buf));
-}
-
-absl::StatusOr<EventEngine::ResolvedAddress> CFReadStreamLocallAddress(
-    CFReadStreamRef stream) {
-  CFTypeUniqueRef<CFDataRef> cf_native_handle = static_cast<CFDataRef>(
-      CFReadStreamCopyProperty(stream, kCFStreamPropertySocketNativeHandle));
-  CFSocketNativeHandle socket;
-  CFDataGetBytes(cf_native_handle, CFRangeMake(0, sizeof(CFSocketNativeHandle)),
-                 (UInt8*)&socket);
-  EventEngine::ResolvedAddress addr;
-  socklen_t len = EventEngine::ResolvedAddress::MAX_SIZE_BYTES;
-  if (getsockname(socket, const_cast<sockaddr*>(addr.address()), &len) < 0) {
-    return absl::InternalError(
-        absl::StrCat("getsockname:", grpc_core::StrError(errno)));
-  }
-  return EventEngine::ResolvedAddress(addr.address(), len);
-}
-
-}  // namespace
-
-bool CFStreamEndpointImpl::CancelConnect(absl::Status status) {
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE(
-      "CFStreamEndpointImpl::CancelConnect: status: %s, this: %p",
-      status.ToString().c_str(), this);
-
-  return open_event_.SetShutdown(std::move(status));
-}
-
-void CFStreamEndpointImpl::Connect(
-    absl::AnyInvocable<void(absl::Status)> on_connect,
-    EventEngine::ResolvedAddress addr) {
-  auto addr_uri = ResolvedAddressToURI(addr);
-
-  if (!addr_uri.ok()) {
-    on_connect(std::move(addr_uri).status());
-    return;
-  }
-
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE("CFStreamEndpointImpl::Connect: %s",
-                                   addr_uri.value().c_str());
-
-  peer_address_ = std::move(addr);
-  auto host_port = ResolvedAddressToNormalizedString(peer_address_);
-  if (!host_port.ok()) {
-    on_connect(std::move(host_port).status());
-    return;
-  }
-
-  peer_address_string_ = host_port.value();
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE(
-      "CFStreamEndpointImpl::Connect, host_port: %s", host_port->c_str());
-
-  std::string host_string;
-  std::string port_string;
-  grpc_core::SplitHostPort(host_port.value(), &host_string, &port_string);
-  CFStringRef host = CFStringCreateWithCString(NULL, host_string.c_str(),
-                                               kCFStringEncodingUTF8);
-  int port = ResolvedAddressGetPort(peer_address_);
-  CFStreamCreatePairWithSocketToHost(NULL, host, port, &cf_read_stream_,
-                                     &cf_write_stream_);
-
-  CFStreamClientContext cf_context = {0, this, Retain, Release, nullptr};
-  CFReadStreamSetClient(
-      cf_read_stream_,
-      kCFStreamEventOpenCompleted | kCFStreamEventHasBytesAvailable |
-          kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered,
-      ReadCallback, &cf_context);
-  CFWriteStreamSetClient(
-      cf_write_stream_,
-      kCFStreamEventOpenCompleted | kCFStreamEventCanAcceptBytes |
-          kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered,
-      WriteCallback, &cf_context);
-  CFReadStreamSetDispatchQueue(cf_read_stream_,
-                               dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0));
-  CFWriteStreamSetDispatchQueue(
-      cf_write_stream_, dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0));
-
-  if (!CFReadStreamOpen(cf_read_stream_)) {
-    auto status = CFErrorToStatus(CFReadStreamCopyError(cf_read_stream_));
-    on_connect(std::move(status));
-    return;
-  }
-
-  if (!CFWriteStreamOpen(cf_write_stream_)) {
-    auto status = CFErrorToStatus(CFWriteStreamCopyError(cf_write_stream_));
-    on_connect(std::move(status));
-    return;
-  }
-
-  open_event_.NotifyOn(new PosixEngineClosure(
-      [that = Ref(),
-       on_connect = std::move(on_connect)](absl::Status status) mutable {
-        if (!status.ok()) {
-          on_connect(std::move(status));
-          return;
-        }
-
-        auto local_addr = CFReadStreamLocallAddress(that->cf_read_stream_);
-        if (!local_addr.ok()) {
-          on_connect(std::move(local_addr).status());
-          return;
-        }
-
-        that->local_address_ = local_addr.value();
-        that->local_address_string_ =
-            *ResolvedAddressToURI(that->local_address_);
-        on_connect(absl::OkStatus());
-      },
-      false /* is_permanent */));
-}
-
-/* static */ void CFStreamEndpointImpl::ReadCallback(
-    CFReadStreamRef stream, CFStreamEventType type,
-    void* client_callback_info) {
-  auto self = static_cast<CFStreamEndpointImpl*>(client_callback_info);
-
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE(
-      "CFStreamEndpointImpl::ReadCallback, type: %lu, this: %p", type, self);
-
-  switch (type) {
-    case kCFStreamEventOpenCompleted:
-      // wait for write stream open completed to signal connection ready
-      break;
-    case kCFStreamEventHasBytesAvailable:
-      ABSL_FALLTHROUGH_INTENDED;
-    case kCFStreamEventEndEncountered:
-      self->read_event_.SetReady();
-      break;
-    case kCFStreamEventErrorOccurred: {
-      auto status = CFErrorToStatus(CFReadStreamCopyError(stream));
-      GRPC_EVENT_ENGINE_ENDPOINT_TRACE("CFStream Read error: %s",
-                                       status.ToString().c_str());
-
-      self->open_event_.SetShutdown(status);
-      self->read_event_.SetShutdown(status);
-      self->write_event_.SetShutdown(status);
-    } break;
-    default:
-      GPR_UNREACHABLE_CODE(return);
-  }
-}
-
-/* static */
-void CFStreamEndpointImpl::WriteCallback(CFWriteStreamRef stream,
-                                         CFStreamEventType type,
-                                         void* client_callback_info) {
-  auto self = static_cast<CFStreamEndpointImpl*>(client_callback_info);
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE(
-      "CFStreamEndpointImpl::WriteCallback, type: %lu, this: %p", type, self);
-
-  switch (type) {
-    case kCFStreamEventOpenCompleted:
-      self->open_event_.SetReady();
-      break;
-    case kCFStreamEventCanAcceptBytes:
-      ABSL_FALLTHROUGH_INTENDED;
-    case kCFStreamEventEndEncountered:
-      self->write_event_.SetReady();
-      break;
-    case kCFStreamEventErrorOccurred: {
-      auto status = CFErrorToStatus(CFWriteStreamCopyError(stream));
-      GRPC_EVENT_ENGINE_ENDPOINT_TRACE("CFStream Write error: %s",
-                                       status.ToString().c_str());
-
-      self->open_event_.SetShutdown(status);
-      self->read_event_.SetShutdown(status);
-      self->write_event_.SetShutdown(status);
-    } break;
-    default:
-      GPR_UNREACHABLE_CODE(return);
-  }
-}
-
-CFStreamEndpointImpl::CFStreamEndpointImpl(
-    std::shared_ptr<CFEventEngine> engine, MemoryAllocator memory_allocator)
-    : engine_(std::move(engine)),
-      memory_allocator_(std::move(memory_allocator)),
-      open_event_(engine_.get()),
-      read_event_(engine_.get()),
-      write_event_(engine_.get()) {
-  open_event_.InitEvent();
-  read_event_.InitEvent();
-  write_event_.InitEvent();
-}
-
-CFStreamEndpointImpl::~CFStreamEndpointImpl() {
-  open_event_.DestroyEvent();
-  read_event_.DestroyEvent();
-  write_event_.DestroyEvent();
-}
-
-void CFStreamEndpointImpl::Shutdown() {
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE("CFStreamEndpointImpl::Shutdown: this: %p",
-                                   this);
-
-  auto shutdownStatus =
-      absl::Status(absl::StatusCode::kUnknown,
-                   absl::StrFormat("Shutting down CFStreamEndpointImpl"));
-  open_event_.SetShutdown(shutdownStatus);
-  read_event_.SetShutdown(shutdownStatus);
-  write_event_.SetShutdown(shutdownStatus);
-
-  CFReadStreamSetClient(cf_read_stream_, kCFStreamEventNone, nullptr, nullptr);
-  CFWriteStreamSetClient(cf_write_stream_, kCFStreamEventNone, nullptr,
-                         nullptr);
-  CFReadStreamClose(cf_read_stream_);
-  CFWriteStreamClose(cf_write_stream_);
-}
-
-bool CFStreamEndpointImpl::Read(
-    absl::AnyInvocable<void(absl::Status)> on_read, SliceBuffer* buffer,
-    const EventEngine::Endpoint::ReadArgs* /* args */) {
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE("CFStreamEndpointImpl::Read, this: %p",
-                                   this);
-
-  read_event_.NotifyOn(new PosixEngineClosure(
-      [that = Ref(), on_read = std::move(on_read),
-       buffer](absl::Status status) mutable {
-        if (status.ok()) {
-          that->DoRead(std::move(on_read), buffer);
-        } else {
-          on_read(status);
-        }
-      },
-      false /* is_permanent*/));
-
-  return false;
-}
-
-void CFStreamEndpointImpl::DoRead(
-    absl::AnyInvocable<void(absl::Status)> on_read, SliceBuffer* buffer) {
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE("CFStreamEndpointImpl::DoRead, this: %p",
-                                   this);
-
-  auto buffer_index = buffer->AppendIndexed(
-      Slice(memory_allocator_.MakeSlice(kDefaultReadBufferSize)));
-
-  CFIndex read_size = CFReadStreamRead(
-      cf_read_stream_,
-      internal::SliceCast<MutableSlice>(buffer->MutableSliceAt(buffer_index))
-          .begin(),
-      kDefaultReadBufferSize);
-
-  if (read_size < 0) {
-    auto status = CFErrorToStatus(CFReadStreamCopyError(cf_read_stream_));
-    GRPC_EVENT_ENGINE_ENDPOINT_TRACE("CFStream read error: %s, read_size: %ld",
-                                     status.ToString().c_str(), read_size);
-    on_read(status);
-    return;
-  }
-
-  buffer->RemoveLastNBytes(buffer->Length() - read_size);
-  on_read(absl::OkStatus());
-}
-
-bool CFStreamEndpointImpl::Write(
-    absl::AnyInvocable<void(absl::Status)> on_writable, SliceBuffer* data,
-    const EventEngine::Endpoint::WriteArgs* /* args */) {
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE("CFStreamEndpointImpl::Write, this: %p",
-                                   this);
-
-  write_event_.NotifyOn(new PosixEngineClosure(
-      [that = Ref(), on_writable = std::move(on_writable),
-       data](absl::Status status) mutable {
-        if (status.ok()) {
-          that->DoWrite(std::move(on_writable), data);
-        } else {
-          on_writable(status);
-        }
-      },
-      false /* is_permanent*/));
-
-  return false;
-}
-
-void CFStreamEndpointImpl::DoWrite(
-    absl::AnyInvocable<void(absl::Status)> on_writable, SliceBuffer* data) {
-  GRPC_EVENT_ENGINE_ENDPOINT_TRACE("CFStreamEndpointImpl::DoWrite, this: %p",
-                                   this);
-
-  size_t total_written_size = 0;
-  for (size_t i = 0; i < data->Count(); i++) {
-    auto slice = data->RefSlice(i);
-    size_t written_size =
-        CFWriteStreamWrite(cf_write_stream_, slice.begin(), slice.size());
-
-    total_written_size += written_size;
-    if (written_size < slice.size()) {
-      SliceBuffer written;
-      data->MoveFirstNBytesIntoSliceBuffer(total_written_size, written);
-
-      write_event_.NotifyOn(new PosixEngineClosure(
-          [that = Ref(), on_writable = std::move(on_writable),
-           data](absl::Status status) mutable {
-            if (status.ok()) {
-              that->DoWrite(std::move(on_writable), data);
-            } else {
-              on_writable(status);
-            }
-          },
-          false /* is_permanent*/));
-      return;
-    }
-  }
-  on_writable(absl::OkStatus());
-}
-
-}  // namespace experimental
-}  // namespace grpc_event_engine
-
-#endif  // GPR_APPLE
diff --git a/src/core/lib/event_engine/cf_engine/cfstream_endpoint.h b/src/core/lib/event_engine/cf_engine/cfstream_endpoint.h
deleted file mode 100644
index 832efda..0000000
--- a/src/core/lib/event_engine/cf_engine/cfstream_endpoint.h
+++ /dev/null
@@ -1,146 +0,0 @@
-// Copyright 2023 The gRPC Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-#ifndef GRPC_SRC_CORE_LIB_EVENT_ENGINE_CF_ENGINE_CFSTREAM_ENDPOINT_H
-#define GRPC_SRC_CORE_LIB_EVENT_ENGINE_CF_ENGINE_CFSTREAM_ENDPOINT_H
-#include <grpc/support/port_platform.h>
-
-#ifdef GPR_APPLE
-
-#include <CoreFoundation/CoreFoundation.h>
-
-#include "absl/strings/str_format.h"
-
-#include <grpc/event_engine/event_engine.h>
-
-#include "src/core/lib/address_utils/sockaddr_utils.h"
-#include "src/core/lib/event_engine/cf_engine/cf_engine.h"
-#include "src/core/lib/event_engine/cf_engine/cftype_unique_ref.h"
-#include "src/core/lib/event_engine/posix_engine/lockfree_event.h"
-#include "src/core/lib/event_engine/tcp_socket_utils.h"
-#include "src/core/lib/gprpp/host_port.h"
-#include "src/core/lib/gprpp/ref_counted.h"
-#include "src/core/lib/gprpp/ref_counted_ptr.h"
-
-namespace grpc_event_engine {
-namespace experimental {
-
-class CFStreamEndpointImpl
-    : public grpc_core::RefCounted<CFStreamEndpointImpl> {
- public:
-  CFStreamEndpointImpl(std::shared_ptr<CFEventEngine> engine,
-                       MemoryAllocator memory_allocator);
-  ~CFStreamEndpointImpl();
-
-  void Shutdown();
-
-  bool Read(absl::AnyInvocable<void(absl::Status)> on_read, SliceBuffer* buffer,
-            const EventEngine::Endpoint::ReadArgs* args);
-  bool Write(absl::AnyInvocable<void(absl::Status)> on_writable,
-             SliceBuffer* data, const EventEngine::Endpoint::WriteArgs* args);
-
-  const EventEngine::ResolvedAddress& GetPeerAddress() const {
-    return peer_address_;
-  }
-  const EventEngine::ResolvedAddress& GetLocalAddress() const {
-    return local_address_;
-  }
-
- public:
-  void Connect(absl::AnyInvocable<void(absl::Status)> on_connect,
-               EventEngine::ResolvedAddress addr);
-  bool CancelConnect(absl::Status status);
-
- private:
-  void DoWrite(absl::AnyInvocable<void(absl::Status)> on_writable,
-               SliceBuffer* data);
-  void DoRead(absl::AnyInvocable<void(absl::Status)> on_read,
-              SliceBuffer* buffer);
-
- private:
-  static void* Retain(void* info) {
-    auto that = static_cast<CFStreamEndpointImpl*>(info);
-    return that->Ref().release();
-  }
-
-  static void Release(void* info) {
-    auto that = static_cast<CFStreamEndpointImpl*>(info);
-    that->Unref();
-  }
-
-  static void ReadCallback(CFReadStreamRef stream, CFStreamEventType type,
-                           void* client_callback_info);
-  static void WriteCallback(CFWriteStreamRef stream, CFStreamEventType type,
-                            void* client_callback_info);
-
- private:
-  CFTypeUniqueRef<CFReadStreamRef> cf_read_stream_;
-  CFTypeUniqueRef<CFWriteStreamRef> cf_write_stream_;
-
-  std::shared_ptr<CFEventEngine> engine_;
-
-  EventEngine::ResolvedAddress peer_address_;
-  EventEngine::ResolvedAddress local_address_;
-  std::string peer_address_string_;
-  std::string local_address_string_;
-  MemoryAllocator memory_allocator_;
-
-  LockfreeEvent open_event_;
-  LockfreeEvent read_event_;
-  LockfreeEvent write_event_;
-};
-
-class CFStreamEndpoint : public EventEngine::Endpoint {
- public:
-  CFStreamEndpoint(std::shared_ptr<CFEventEngine> engine,
-                   MemoryAllocator memory_allocator) {
-    impl_ = grpc_core::MakeRefCounted<CFStreamEndpointImpl>(
-        std::move(engine), std::move(memory_allocator));
-  }
-  ~CFStreamEndpoint() override { impl_->Shutdown(); }
-
-  bool Read(absl::AnyInvocable<void(absl::Status)> on_read, SliceBuffer* buffer,
-            const ReadArgs* args) override {
-    return impl_->Read(std::move(on_read), buffer, args);
-  }
-  bool Write(absl::AnyInvocable<void(absl::Status)> on_writable,
-             SliceBuffer* data, const WriteArgs* args) override {
-    return impl_->Write(std::move(on_writable), data, args);
-  }
-
-  const EventEngine::ResolvedAddress& GetPeerAddress() const override {
-    return impl_->GetPeerAddress();
-  }
-  const EventEngine::ResolvedAddress& GetLocalAddress() const override {
-    return impl_->GetLocalAddress();
-  }
-
- public:
-  void Connect(absl::AnyInvocable<void(absl::Status)> on_connect,
-               EventEngine::ResolvedAddress addr) {
-    impl_->Connect(std::move(on_connect), std::move(addr));
-  }
-  bool CancelConnect(absl::Status status) {
-    return impl_->CancelConnect(std::move(status));
-  }
-
- private:
-  grpc_core::RefCountedPtr<CFStreamEndpointImpl> impl_;
-};
-
-}  // namespace experimental
-}  // namespace grpc_event_engine
-
-#endif  // GPR_APPLE
-
-#endif  // GRPC_SRC_CORE_LIB_EVENT_ENGINE_CF_ENGINE_CFSTREAM_ENDPOINT_H
diff --git a/src/core/lib/event_engine/cf_engine/cftype_unique_ref.h b/src/core/lib/event_engine/cf_engine/cftype_unique_ref.h
deleted file mode 100644
index c791517..0000000
--- a/src/core/lib/event_engine/cf_engine/cftype_unique_ref.h
+++ /dev/null
@@ -1,79 +0,0 @@
-// Copyright 2023 The gRPC Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-#ifndef GRPC_SRC_CORE_LIB_EVENT_ENGINE_CF_ENGINE_CFTYPE_UNIQUE_REF_H
-#define GRPC_SRC_CORE_LIB_EVENT_ENGINE_CF_ENGINE_CFTYPE_UNIQUE_REF_H
-#include <grpc/support/port_platform.h>
-
-#ifdef GPR_APPLE
-
-#include <CoreFoundation/CoreFoundation.h>
-
-namespace grpc_event_engine {
-namespace experimental {
-
-template <typename T>
-class CFTypeUniqueRef {
-  static_assert(std::is_convertible<T, CFTypeRef>::value,
-                "T should be `CFXxxRef` type");
-
- public:
-  /* implicit */
-  CFTypeUniqueRef(T cf_type_ref = nullptr) : cf_type_ref_(cf_type_ref) {}
-  ~CFTypeUniqueRef() { reset(); }
-
-  CFTypeUniqueRef(CFTypeUniqueRef const&) = delete;
-  CFTypeUniqueRef& operator=(CFTypeUniqueRef const&) = delete;
-
-  CFTypeUniqueRef(CFTypeUniqueRef&& other) : cf_type_ref_(other.release()){};
-  CFTypeUniqueRef& operator=(CFTypeUniqueRef&& other) {
-    reset(other.release());
-    return *this;
-  }
-
-  operator T() { return cf_type_ref_; }
-
-  // Note: this is for passing a CFTypeRef as output parameter to a CF API, the
-  // current ref is released (if any) regardless of whether new value is set
-  T* operator&() {
-    reset();
-    return &cf_type_ref_;
-  }
-
-  T release() {
-    T old = cf_type_ref_;
-    cf_type_ref_ = nullptr;
-    return old;
-  }
-
-  void reset(T other = nullptr) {
-    if (cf_type_ref_ == other) {
-      return;
-    }
-    T old = cf_type_ref_;
-    cf_type_ref_ = other;
-    if (old) {
-      CFRelease(old);
-    }
-  }
-
- private:
-  T cf_type_ref_;
-};
-
-}  // namespace experimental
-}  // namespace grpc_event_engine
-
-#endif  // GPR_APPLE
-
-#endif  // GRPC_SRC_CORE_LIB_EVENT_ENGINE_CF_ENGINE_CFTYPE_UNIQUE_REF_H
diff --git a/src/core/lib/event_engine/default_event_engine_factory.cc b/src/core/lib/event_engine/default_event_engine_factory.cc
index 10bfe89..a4311bc 100644
--- a/src/core/lib/event_engine/default_event_engine_factory.cc
+++ b/src/core/lib/event_engine/default_event_engine_factory.cc
@@ -20,7 +20,7 @@
 
 #include <grpc/event_engine/event_engine.h>
 
-#if defined(GPR_WINDOWS)
+#ifdef GPR_WINDOWS
 #include "src/core/lib/event_engine/windows/windows_engine.h"
 
 namespace grpc_event_engine {
@@ -32,19 +32,7 @@
 
 }  // namespace experimental
 }  // namespace grpc_event_engine
-#elif defined(GRPC_CFSTREAM)
-#include "src/core/lib/event_engine/cf_engine/cf_engine.h"
-
-namespace grpc_event_engine {
-namespace experimental {
-
-std::unique_ptr<EventEngine> DefaultEventEngineFactory() {
-  return std::make_unique<CFEventEngine>();
-}
-
-}  // namespace experimental
-}  // namespace grpc_event_engine
-#else
+#else  // not GPR_WINDOWS
 #include "src/core/lib/event_engine/posix_engine/posix_engine.h"
 
 namespace grpc_event_engine {
diff --git a/src/core/lib/iomgr/cfstream_handle.cc b/src/core/lib/iomgr/cfstream_handle.cc
index 2978139..434a019 100644
--- a/src/core/lib/iomgr/cfstream_handle.cc
+++ b/src/core/lib/iomgr/cfstream_handle.cc
@@ -188,7 +188,7 @@
 void CFStreamHandle::Unref(const char* file, int line, const char* reason) {
   if (grpc_tcp_trace.enabled()) {
     gpr_atm val = gpr_atm_no_barrier_load(&refcount_.count);
-    gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG,
+    gpr_log(GPR_DEBUG,
             "CFStream Handle unref %p : %s %" PRIdPTR " -> %" PRIdPTR, this,
             reason, val, val - 1);
   }
diff --git a/src/core/lib/iomgr/endpoint_cfstream.cc b/src/core/lib/iomgr/endpoint_cfstream.cc
index 673a0b9..edfea7c 100644
--- a/src/core/lib/iomgr/endpoint_cfstream.cc
+++ b/src/core/lib/iomgr/endpoint_cfstream.cc
@@ -240,7 +240,7 @@
 }
 
 static void CFStreamRead(grpc_endpoint* ep, grpc_slice_buffer* slices,
-                         grpc_closure* cb, bool /*urgent*/,
+                         grpc_closure* cb, bool urgent,
                          int /*min_progress_size*/) {
   CFStreamEndpoint* ep_impl = reinterpret_cast<CFStreamEndpoint*>(ep);
   if (grpc_tcp_trace.enabled()) {
@@ -258,8 +258,7 @@
 }
 
 static void CFStreamWrite(grpc_endpoint* ep, grpc_slice_buffer* slices,
-                          grpc_closure* cb, void* /*arg*/,
-                          int /*max_frame_size*/) {
+                          grpc_closure* cb, void* arg, int /*max_frame_size*/) {
   CFStreamEndpoint* ep_impl = reinterpret_cast<CFStreamEndpoint*>(ep);
   if (grpc_tcp_trace.enabled()) {
     gpr_log(GPR_DEBUG, "CFStream endpoint:%p write (%p, %p) length:%zu",
@@ -305,15 +304,14 @@
   return ep_impl->local_address;
 }
 
-int CFStreamGetFD(grpc_endpoint* /*ep*/) { return 0; }
+int CFStreamGetFD(grpc_endpoint* ep) { return 0; }
 
-bool CFStreamCanTrackErr(grpc_endpoint* /*ep*/) { return false; }
+bool CFStreamCanTrackErr(grpc_endpoint* ep) { return false; }
 
-void CFStreamAddToPollset(grpc_endpoint* /*ep*/, grpc_pollset* /*pollset*/) {}
-void CFStreamAddToPollsetSet(grpc_endpoint* /*ep*/,
-                             grpc_pollset_set* /*pollset*/) {}
-void CFStreamDeleteFromPollsetSet(grpc_endpoint* /*ep*/,
-                                  grpc_pollset_set* /*pollset*/) {}
+void CFStreamAddToPollset(grpc_endpoint* ep, grpc_pollset* pollset) {}
+void CFStreamAddToPollsetSet(grpc_endpoint* ep, grpc_pollset_set* pollset) {}
+void CFStreamDeleteFromPollsetSet(grpc_endpoint* ep,
+                                  grpc_pollset_set* pollset) {}
 
 static const grpc_endpoint_vtable vtable = {CFStreamRead,
                                             CFStreamWrite,
diff --git a/src/core/lib/iomgr/ev_apple.cc b/src/core/lib/iomgr/ev_apple.cc
index ba6c21d..efc7639 100644
--- a/src/core/lib/iomgr/ev_apple.cc
+++ b/src/core/lib/iomgr/ev_apple.cc
@@ -118,7 +118,7 @@
 /// be issued to the run loop when a network event happens and will be driven by
 /// the global run loop thread gGlobalRunLoopThread.
 static void grpc_apple_register_read_stream_run_loop(
-    CFReadStreamRef read_stream, dispatch_queue_t /*dispatch_queue*/) {
+    CFReadStreamRef read_stream, dispatch_queue_t dispatch_queue) {
   GRPC_POLLING_TRACE("Register read stream: %p", read_stream);
   grpc_core::MutexLock lock(&gGlobalRunLoopContext->mu);
   CFReadStreamScheduleWithRunLoop(read_stream, gGlobalRunLoopContext->run_loop,
@@ -131,7 +131,7 @@
 /// be issued to the run loop when a network event happens, and will be driven
 /// by the global run loop thread gGlobalRunLoopThread.
 static void grpc_apple_register_write_stream_run_loop(
-    CFWriteStreamRef write_stream, dispatch_queue_t /*dispatch_queue*/) {
+    CFWriteStreamRef write_stream, dispatch_queue_t dispatch_queue) {
   GRPC_POLLING_TRACE("Register write stream: %p", write_stream);
   grpc_core::MutexLock lock(&gGlobalRunLoopContext->mu);
   CFWriteStreamScheduleWithRunLoop(
@@ -163,7 +163,7 @@
 
 /// Drive the run loop in a global singleton thread until the global run loop is
 /// shutdown.
-static void GlobalRunLoopFunc(void* /*arg*/) {
+static void GlobalRunLoopFunc(void* arg) {
   grpc_core::LockableAndReleasableMutexLock lock(&gGlobalRunLoopContext->mu);
   gGlobalRunLoopContext->run_loop = CFRunLoopGetCurrent();
   gGlobalRunLoopContext->init_cv.Signal();
@@ -342,15 +342,15 @@
 // pollset_set implementation
 
 grpc_pollset_set* pollset_set_create(void) { return nullptr; }
-void pollset_set_destroy(grpc_pollset_set* /*pollset_set*/) {}
-void pollset_set_add_pollset(grpc_pollset_set* /*pollset_set*/,
-                             grpc_pollset* /*pollset*/) {}
-void pollset_set_del_pollset(grpc_pollset_set* /*pollset_set*/,
-                             grpc_pollset* /*pollset*/) {}
-void pollset_set_add_pollset_set(grpc_pollset_set* /*bag*/,
-                                 grpc_pollset_set* /*item*/) {}
-void pollset_set_del_pollset_set(grpc_pollset_set* /*bag*/,
-                                 grpc_pollset_set* /*item*/) {}
+void pollset_set_destroy(grpc_pollset_set* pollset_set) {}
+void pollset_set_add_pollset(grpc_pollset_set* pollset_set,
+                             grpc_pollset* pollset) {}
+void pollset_set_del_pollset(grpc_pollset_set* pollset_set,
+                             grpc_pollset* pollset) {}
+void pollset_set_add_pollset_set(grpc_pollset_set* bag,
+                                 grpc_pollset_set* item) {}
+void pollset_set_del_pollset_set(grpc_pollset_set* bag,
+                                 grpc_pollset_set* item) {}
 
 grpc_pollset_set_vtable grpc_apple_pollset_set_vtable = {
     pollset_set_create,          pollset_set_destroy,
diff --git a/src/core/lib/iomgr/iomgr_posix_cfstream.cc b/src/core/lib/iomgr/iomgr_posix_cfstream.cc
index 8e2d218..ddb5140 100644
--- a/src/core/lib/iomgr/iomgr_posix_cfstream.cc
+++ b/src/core/lib/iomgr/iomgr_posix_cfstream.cc
@@ -73,7 +73,7 @@
 }
 
 static bool apple_iomgr_platform_add_closure_to_background_poller(
-    grpc_closure* /*closure*/, grpc_error_handle /*error*/) {
+    grpc_closure* closure, grpc_error_handle error) {
   return false;
 }
 
diff --git a/src/core/lib/iomgr/tcp_client_cfstream.cc b/src/core/lib/iomgr/tcp_client_cfstream.cc
index 09e7c5d..7be3637 100644
--- a/src/core/lib/iomgr/tcp_client_cfstream.cc
+++ b/src/core/lib/iomgr/tcp_client_cfstream.cc
@@ -33,7 +33,6 @@
 #include <grpc/support/sync.h>
 
 #include "src/core/lib/address_utils/sockaddr_utils.h"
-#include "src/core/lib/event_engine/shim.h"
 #include "src/core/lib/gprpp/crash.h"
 #include "src/core/lib/gprpp/host_port.h"
 #include "src/core/lib/iomgr/cfstream_handle.h"
@@ -41,7 +40,6 @@
 #include "src/core/lib/iomgr/endpoint_cfstream.h"
 #include "src/core/lib/iomgr/error.h"
 #include "src/core/lib/iomgr/error_cfstream.h"
-#include "src/core/lib/iomgr/event_engine_shims/tcp_client.h"
 #include "src/core/lib/iomgr/tcp_client.h"
 #include "src/core/lib/iomgr/timer.h"
 
@@ -151,14 +149,9 @@
 
 static int64_t CFStreamClientConnect(
     grpc_closure* closure, grpc_endpoint** ep,
-    grpc_pollset_set* /*interested_parties*/,
-    const grpc_event_engine::experimental::EndpointConfig& config,
+    grpc_pollset_set* interested_parties,
+    const grpc_event_engine::experimental::EndpointConfig& /*config*/,
     const grpc_resolved_address* resolved_addr, grpc_core::Timestamp deadline) {
-  if (grpc_event_engine::experimental::UseEventEngineClient()) {
-    return grpc_event_engine::experimental::event_engine_tcp_client_connect(
-        closure, ep, config, resolved_addr, deadline);
-  }
-
   auto addr_uri = grpc_sockaddr_to_uri(resolved_addr);
   if (!addr_uri.ok()) {
     grpc_error_handle error = GRPC_ERROR_CREATE(addr_uri.status().ToString());
@@ -205,11 +198,7 @@
   return 0;
 }
 
-static bool CFStreamClientCancelConnect(int64_t connection_handle) {
-  if (grpc_event_engine::experimental::UseEventEngineClient()) {
-    return grpc_event_engine::experimental::
-        event_engine_tcp_client_cancel_connect(connection_handle);
-  }
+static bool CFStreamClientCancelConnect(int64_t /*connection_handle*/) {
   return false;
 }
 
diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py
index eac2f2f..c9246ed 100644
--- a/src/python/grpcio/grpc_core_dependencies.py
+++ b/src/python/grpcio/grpc_core_dependencies.py
@@ -488,8 +488,6 @@
     'src/core/lib/debug/stats.cc',
     'src/core/lib/debug/stats_data.cc',
     'src/core/lib/debug/trace.cc',
-    'src/core/lib/event_engine/cf_engine/cf_engine.cc',
-    'src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc',
     'src/core/lib/event_engine/channel_args_endpoint_config.cc',
     'src/core/lib/event_engine/default_event_engine.cc',
     'src/core/lib/event_engine/default_event_engine_factory.cc',
diff --git a/test/core/event_engine/cf/BUILD b/test/core/event_engine/cf/BUILD
deleted file mode 100644
index 0c9aec0..0000000
--- a/test/core/event_engine/cf/BUILD
+++ /dev/null
@@ -1,33 +0,0 @@
-# Copyright 2023 gRPC authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-load("//bazel:grpc_build_system.bzl", "grpc_cc_test")
-
-licenses(["notice"])
-
-grpc_cc_test(
-    name = "cf_engine_test",
-    timeout = "short",
-    srcs = ["cf_engine_test.cc"],
-    external_deps = ["gtest"],
-    language = "C++",
-    tags = [
-        "no_linux",
-        "no_windows",
-    ],
-    deps = [
-        "//src/core:cf_event_engine",
-        "//test/core/util:grpc_test_util",
-    ],
-)
diff --git a/test/core/event_engine/cf/cf_engine_test.cc b/test/core/event_engine/cf/cf_engine_test.cc
deleted file mode 100644
index f50b40f..0000000
--- a/test/core/event_engine/cf/cf_engine_test.cc
+++ /dev/null
@@ -1,96 +0,0 @@
-// Copyright 2023 gRPC authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include <grpc/support/port_platform.h>
-
-#ifdef GPR_APPLE
-
-#include <thread>
-
-#include "absl/status/status.h"
-#include "gtest/gtest.h"
-
-#include <grpc/event_engine/event_engine.h>
-#include <grpc/grpc.h>
-
-#include "src/core/lib/event_engine/cf_engine/cf_engine.h"
-#include "src/core/lib/event_engine/channel_args_endpoint_config.h"
-#include "src/core/lib/event_engine/tcp_socket_utils.h"
-#include "src/core/lib/resource_quota/memory_quota.h"
-#include "src/core/lib/resource_quota/resource_quota.h"
-#include "test/core/util/port.h"
-
-using namespace std::chrono_literals;
-
-namespace grpc_event_engine {
-namespace experimental {
-
-TEST(CFEventEngineTest, TestConnectionTimeout) {
-  // use a non-routable IP so connection will timeout
-  auto resolved_addr = URIToResolvedAddress("ipv4:10.255.255.255:1234");
-  GPR_ASSERT(resolved_addr.ok());
-
-  grpc_core::MemoryQuota memory_quota("cf_engine_test");
-  grpc_core::Notification client_signal;
-  auto cf_engine = std::make_shared<CFEventEngine>();
-
-  ChannelArgsEndpointConfig config(grpc_core::ChannelArgs().Set(
-      GRPC_ARG_RESOURCE_QUOTA, grpc_core::ResourceQuota::Default()));
-  cf_engine->Connect(
-      [&client_signal](auto endpoint) {
-        EXPECT_EQ(endpoint.status().code(),
-                  absl::StatusCode::kDeadlineExceeded);
-        client_signal.Notify();
-      },
-      *resolved_addr, config, memory_quota.CreateMemoryAllocator("conn1"), 1ms);
-
-  client_signal.WaitForNotification();
-}
-
-TEST(CFEventEngineTest, TestConnectionCancelled) {
-  // use a non-routable IP so to cancel connection before timeout
-  auto resolved_addr = URIToResolvedAddress("ipv4:10.255.255.255:1234");
-  GPR_ASSERT(resolved_addr.ok());
-
-  grpc_core::MemoryQuota memory_quota("cf_engine_test");
-  grpc_core::Notification client_signal;
-  auto cf_engine = std::make_shared<CFEventEngine>();
-
-  ChannelArgsEndpointConfig config(grpc_core::ChannelArgs().Set(
-      GRPC_ARG_RESOURCE_QUOTA, grpc_core::ResourceQuota::Default()));
-  auto conn_handle = cf_engine->Connect(
-      [&client_signal](auto endpoint) {
-        EXPECT_EQ(endpoint.status().code(), absl::StatusCode::kCancelled);
-        client_signal.Notify();
-      },
-      *resolved_addr, config, memory_quota.CreateMemoryAllocator("conn1"), 1h);
-
-  cf_engine->CancelConnect(conn_handle);
-  client_signal.WaitForNotification();
-}
-
-}  // namespace experimental
-}  // namespace grpc_event_engine
-
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-  grpc_init();
-  int status = RUN_ALL_TESTS();
-  grpc_shutdown();
-  return status;
-}
-
-#else  // not GPR_APPLE
-int main(int /* argc */, char** /* argv */) { return 0; }
-#endif
diff --git a/test/core/event_engine/posix/BUILD b/test/core/event_engine/posix/BUILD
index 6576c21..0d8ee42 100644
--- a/test/core/event_engine/posix/BUILD
+++ b/test/core/event_engine/posix/BUILD
@@ -224,7 +224,6 @@
     external_deps = ["gtest"],
     language = "C++",
     tags = [
-        "no_mac",
         "no_windows",
     ],
     uses_event_engine = True,
diff --git a/test/core/event_engine/test_suite/BUILD b/test/core/event_engine/test_suite/BUILD
index 8e85928..620380b 100644
--- a/test/core/event_engine/test_suite/BUILD
+++ b/test/core/event_engine/test_suite/BUILD
@@ -40,7 +40,6 @@
     name = "posix_event_engine_test",
     srcs = ["posix_event_engine_test.cc"],
     tags = [
-        "no_mac",
         "no_windows",
     ],
     uses_event_engine = True,
@@ -99,11 +98,9 @@
         "no_linux",
         "no_windows",
     ],
-    uses_polling = True,
+    uses_polling = False,
     deps = [
         "//src/core:cf_event_engine",
-        "//test/core/event_engine/test_suite/posix:oracle_event_engine_posix",
-        "//test/core/event_engine/test_suite/tests:client",
         "//test/core/event_engine/test_suite/tests:timer",
     ],
 )
diff --git a/test/core/event_engine/test_suite/cf_event_engine_test.cc b/test/core/event_engine/test_suite/cf_event_engine_test.cc
index 1d22251..1f3c800 100644
--- a/test/core/event_engine/test_suite/cf_event_engine_test.cc
+++ b/test/core/event_engine/test_suite/cf_event_engine_test.cc
@@ -19,8 +19,6 @@
 
 #include "src/core/lib/event_engine/cf_engine/cf_engine.h"
 #include "test/core/event_engine/test_suite/event_engine_test_framework.h"
-#include "test/core/event_engine/test_suite/posix/oracle_event_engine_posix.h"
-#include "test/core/event_engine/test_suite/tests/client_test.h"
 #include "test/core/event_engine/test_suite/tests/timer_test.h"
 #include "test/core/util/test_config.h"
 
@@ -30,15 +28,8 @@
   auto factory = []() {
     return std::make_unique<grpc_event_engine::experimental::CFEventEngine>();
   };
-  auto oracle_factory = []() {
-    return std::make_unique<
-        grpc_event_engine::experimental::PosixOracleEventEngine>();
-  };
-  SetEventEngineFactories(factory, oracle_factory);
+  SetEventEngineFactories(factory, factory);
   grpc_event_engine::experimental::InitTimerTests();
-  grpc_event_engine::experimental::InitClientTests();
-  // TODO(vigneshbabu): remove when the experiment is over
-  grpc_core::ForceEnableExperiment("event_engine_client", true);
   // TODO(ctiller): EventEngine temporarily needs grpc to be initialized first
   // until we clear out the iomgr shutdown code.
   grpc_init();
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index e1f1734..a028738 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -2047,11 +2047,6 @@
 src/core/lib/debug/stats_data.h \
 src/core/lib/debug/trace.cc \
 src/core/lib/debug/trace.h \
-src/core/lib/event_engine/cf_engine/cf_engine.cc \
-src/core/lib/event_engine/cf_engine/cf_engine.h \
-src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc \
-src/core/lib/event_engine/cf_engine/cfstream_endpoint.h \
-src/core/lib/event_engine/cf_engine/cftype_unique_ref.h \
 src/core/lib/event_engine/channel_args_endpoint_config.cc \
 src/core/lib/event_engine/channel_args_endpoint_config.h \
 src/core/lib/event_engine/common_closures.h \
diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index e6f8e9d..c1b20e0 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -1826,11 +1826,6 @@
 src/core/lib/debug/stats_data.h \
 src/core/lib/debug/trace.cc \
 src/core/lib/debug/trace.h \
-src/core/lib/event_engine/cf_engine/cf_engine.cc \
-src/core/lib/event_engine/cf_engine/cf_engine.h \
-src/core/lib/event_engine/cf_engine/cfstream_endpoint.cc \
-src/core/lib/event_engine/cf_engine/cfstream_endpoint.h \
-src/core/lib/event_engine/cf_engine/cftype_unique_ref.h \
 src/core/lib/event_engine/channel_args_endpoint_config.cc \
 src/core/lib/event_engine/channel_args_endpoint_config.h \
 src/core/lib/event_engine/common_closures.h \
diff --git a/tools/run_tests/generated/tests.json b/tools/run_tests/generated/tests.json
index f4a07bb..a491456 100644
--- a/tools/run_tests/generated/tests.json
+++ b/tools/run_tests/generated/tests.json
@@ -1359,35 +1359,13 @@
     "flaky": false,
     "gtest": true,
     "language": "c++",
-    "name": "cf_engine_test",
-    "platforms": [
-      "linux",
-      "mac",
-      "posix"
-    ],
-    "uses_polling": true
-  },
-  {
-    "args": [],
-    "benchmark": false,
-    "ci_platforms": [
-      "linux",
-      "mac",
-      "posix"
-    ],
-    "cpu_cost": 1.0,
-    "exclude_configs": [],
-    "exclude_iomgrs": [],
-    "flaky": false,
-    "gtest": true,
-    "language": "c++",
     "name": "cf_event_engine_test",
     "platforms": [
       "linux",
       "mac",
       "posix"
     ],
-    "uses_polling": true
+    "uses_polling": false
   },
   {
     "args": [],
@@ -5568,6 +5546,7 @@
     "benchmark": false,
     "ci_platforms": [
       "linux",
+      "mac",
       "posix"
     ],
     "cpu_cost": 1.0,
@@ -5579,6 +5558,7 @@
     "name": "posix_event_engine_connect_test",
     "platforms": [
       "linux",
+      "mac",
       "posix"
     ],
     "uses_polling": true
@@ -5588,6 +5568,7 @@
     "benchmark": false,
     "ci_platforms": [
       "linux",
+      "mac",
       "posix"
     ],
     "cpu_cost": 1.0,
@@ -5599,6 +5580,7 @@
     "name": "posix_event_engine_test",
     "platforms": [
       "linux",
+      "mac",
       "posix"
     ],
     "uses_polling": true