Without me doing anything, since one of the WatchOS7 or iPhone 14 Betas, if I am wearing my watch to bed, it plays the alarm sound my phone normally would, and my phone stays silent. I can still either tap my phone or watch then pick Snooze or Stop, but the sound only plays from my watch. If my watch is charging, then the phone plays the sound.
Hmm. I just tried and my iPhone played my selected choice and the watch just normal ding. Anyway don’t want to stay off topic of the thread.