diff --git a/src/synchronicity/async_wrap.py b/src/synchronicity/async_wrap.py
index 64ba0d8..27f92b0 100644
--- a/src/synchronicity/async_wrap.py
+++ b/src/synchronicity/async_wrap.py
@@ -39,7 +39,7 @@ async def wrapper(*args, **kwargs):
 
 
 def is_coroutine_function_follow_wrapped(func: typing.Callable) -> bool:
-    """Determine if a function returns a coroutine, unwrapping decorators, but not the async synchronicitiy interace."""
+    """Determine if a function returns a coroutine, unwrapping decorators, but not the async synchronicity interace."""
     from .synchronizer import TARGET_INTERFACE_ATTR  # Avoid circular import
 
     if hasattr(func, "__wrapped__") and getattr(func, TARGET_INTERFACE_ATTR, None) != Interface.BLOCKING:
@@ -47,6 +47,16 @@ def is_coroutine_function_follow_wrapped(func: typing.Callable) -> bool:
     return inspect.iscoroutinefunction(func)
 
 
+def is_async_gen_function_follow_wrapped(func: typing.Callable) -> bool:
+    """Determine if a function returns an async generator, unwrapping decorators, but not the async synchronicity interace."""
+    from .synchronizer import TARGET_INTERFACE_ATTR  # Avoid circular import
+
+    if hasattr(func, "__wrapped__") and getattr(func, TARGET_INTERFACE_ATTR, None) != Interface.BLOCKING:
+        return is_async_gen_function_follow_wrapped(func.__wrapped__)
+    return inspect.isasyncgenfunction(func)
+
+
+
 YIELD_TYPE = typing.TypeVar("YIELD_TYPE")
 SEND_TYPE = typing.TypeVar("SEND_TYPE")
 
diff --git a/src/synchronicity/synchronizer.py b/src/synchronicity/synchronizer.py
index 79080ea..d671f12 100644
--- a/src/synchronicity/synchronizer.py
+++ b/src/synchronicity/synchronizer.py
@@ -20,7 +20,7 @@
 from synchronicity.annotations import evaluated_annotation
 from synchronicity.combined_types import FunctionWithAio, MethodWithAio
 
-from .async_wrap import wraps_by_interface
+from .async_wrap import is_async_gen_function_follow_wrapped, is_coroutine_function_follow_wrapped, wraps_by_interface
 from .callback import Callback
 from .exceptions import UserCodeException, unwrap_coro_exception, wrap_coro_exception
 from .interface import DEFAULT_CLASS_PREFIX, DEFAULT_FUNCTION_PREFIXES, Interface
@@ -56,18 +56,6 @@
 )
 
 
-def iscoroutinefunction_follow_wrapped(func):
-    if hasattr(func, "__wrapped__"):
-        return iscoroutinefunction_follow_wrapped(func.__wrapped__)
-    return inspect.iscoroutinefunction(func)
-
-
-def isasyncgenfunction_follow_wrapped(func):
-    if hasattr(func, "__wrapped__"):
-        return isasyncgenfunction_follow_wrapped(func.__wrapped__)
-    return inspect.isasyncgenfunction(func)
-
-
 def _type_requires_aio_usage(annotation, declaration_module):
     if isinstance(annotation, ForwardRef):
         annotation = annotation.__forward_arg__
@@ -91,7 +79,7 @@ def _type_requires_aio_usage(annotation, declaration_module):
 
 def should_have_aio_interface(func):
     # determines if a blocking function gets an .aio attribute with an async interface to the function or not
-    if iscoroutinefunction_follow_wrapped(func) or isasyncgenfunction_follow_wrapped(func):
+    if is_coroutine_function_follow_wrapped(func) or is_async_gen_function_follow_wrapped(func):
         return True
     # check annotations if they contain any async entities that would need an event loop to be translated:
     # This catches things like vanilla functions returning Coroutines
@@ -480,8 +468,6 @@ def _wrap_callable(
         else:
             _name = name
 
-        is_coroutinefunction = iscoroutinefunction_follow_wrapped(f)
-
         @wraps_by_interface(interface, f)
         def f_wrapped(*args, **kwargs):
             return_future = kwargs.pop(_RETURN_FUTURE_KWARG, False)
@@ -511,7 +497,7 @@ def f_wrapped(*args, **kwargs):
             elif is_coroutine:
                 if interface == Interface._ASYNC_WITH_BLOCKING_TYPES:
                     coro = self._run_function_async(res, f)
-                    if not is_coroutinefunction:
+                    if not is_coroutine_function_follow_wrapped(f):
                         # If this is a non-async function that returns a coroutine,
                         # then this is the exit point, and we need to unwrap any
                         # wrapped exception here. Otherwise, the exit point is
diff --git a/src/synchronicity/type_stubs.py b/src/synchronicity/type_stubs.py
index d9e1e93..1d3c062 100644
--- a/src/synchronicity/type_stubs.py
+++ b/src/synchronicity/type_stubs.py
@@ -857,11 +857,6 @@ def _get_function_source(
             self.imports.add("typing_extensions")
             maybe_decorators = f"{signature_indent}@typing_extensions.dataclass_transform({args})\n"
 
-        def is_async(func):
-            if hasattr(func, "__wrapped__") and getattr(func, TARGET_INTERFACE_ATTR, None) != Interface.BLOCKING:
-                return is_async(func.__wrapped__)
-            return inspect.iscoroutinefunction(func)
-
         async_prefix = ""
         if is_coroutine_function_follow_wrapped(func):
             # note: async prefix should not be used for annotated abstract/stub *async generators*,