I have the same issue with my Apple Watch 6 not ringing after my iPhone has been wirelessly connected to CarPlay in my vehicle. It will work again once I leave my car and turn my iPhone off and back on. This is very frustrating. This is the first Apple watch I've owned and I'm considering returning the watch if the issue isn't resolved.
Jennsuz
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution