I attempted a hack to allow my Apple Watch to communicate (almost) directly with my ReSound Quattro’s by passing the iPhone but introducing another “middleperson.” And it works! (up to a point but NOT GOOD ENOUGH to be useful. Sigh!).
I discovered in trying to conquer the problem of the Apple Watch not being able to send media sound back to the iPhone that one can use the Phone Clip+ (a ReSound BT streamer designed for pre-ASHA Android phones) to send sound from the Apple Watch directly to one’s HA’s since the PC+ pairs with up to 8 classic BT devices and pairs with one’s HA’s independently of the iPhone/HA pairing.
So I thought, Hmmm!, maybe the same setup would allow hands-free calling just using the Apple Watch and the PC+ hung around my neck without having to pick up or be close to my iPhone.
I could call my wife on her iPhone from my Apple Watch via my iPhone and hear her loud and clear thru my Quattro’s via the PC+. The trouble was on her end, although she said my voice was coming through nice and loud, it was all broken up. Presumably the Apple Watch processor is not up to streaming to the iPhone (the source and sink of all phone call audio) and streaming at least audio output received from wife to the PC+ at the same time. I never even got around to try to figure out whether the PC+ microphone can send one’s voice back to the watch, then onto the iPhone to go out over the airwaves as no point in further research with my voice all broken up.
Just using the Apple Watch speaker and microphone or only my iPhone with my Quattro’s and the same cellular connection, the wife said my voice came through loud and clear and ungarbled to her.
So maybe someday with a bigger battery and more powerful processing Apple can make the Apple Watch more versatile as to how phone call audio can be routed and used.