So tried this out the other day. A little pain to get working but it works.
only issue is you can not have apple’s built in workout app record data, the Zwift Apple Watch app takes over and is very basic (only does heart rate) and the does not seem to be a way to stop it. I have to “kill”the Apple Watch app when I’m done.
Was wondering if you just use the mobile link app with Zwift, why can’t you still get the heart rate if the built in Apple Watch work out app is recording it? The mobile link app should be able to read the real time heart rate from the iOS health app.