- Run Zwift on AppleTV.
- Run the Companion on your iPhone.
- On the AppleTV pairing screen, in the upper left corner, select the “Pair with Zwift Companion”
- Pair everything you need/want.
I don’t have an Apple watch, so I cannot help you with that.
Here are some links you might find helpful:
compliments of @Shane_Miller_GPLama :