Hey guys - just checking in again to confirm that we are monitoring this thread closely, and are continuing to try and reproduce this issue on our side. Our tests with WearOS watches connected to iPhones show no issue so far, but obviously you guys have found a scenario where it doesn't work.
At this point, we suspect it's related to a combination of specific watch model, specific WearOS version, specific Google Play Services version, and connectivity with iPhone. We're continuing to try and debug this with Google and will update you when we have some more info we can share.
Thanks for your patience!