Under WSGI, multiple calls to asgiref.sync.async_to_sync within the same request do not share the same event loop.

[Mykhailo Havelia]

Each call creates a new thread with its own event loop. This commonly happens in middlewares and signals, causing a single request to spawn multiple threads and event loops, which is unnecessary and prevents reuse of async resources.

This could be addressed by introducing a per-request async context, for example as shown in this draft implementation:
​https://github.com/Arfey/django/pull/5/changes