There isn't yet a thread that explicitly explains this, so here we go..
I curiously pondered why I wasn't receiving Calls on my shiny new Apple Watch, even though everything else works and the phone rings normally.
After finding this thread: https://forums.macrumors.com/threads/1872575/
It became clear that with Wifi calling on (which is a great feature), Continuity doesn't work, and because the watch uses continuity to receive calls, it disables the ability to answer them on your watch.
Not exactly a groundbreaking issue, but it would be nice to have the best of both.
I curiously pondered why I wasn't receiving Calls on my shiny new Apple Watch, even though everything else works and the phone rings normally.
After finding this thread: https://forums.macrumors.com/threads/1872575/
It became clear that with Wifi calling on (which is a great feature), Continuity doesn't work, and because the watch uses continuity to receive calls, it disables the ability to answer them on your watch.
Not exactly a groundbreaking issue, but it would be nice to have the best of both.