Messenger Notifications Apple Watch
Can I get Messenger notifications on Apple Watch Series 6
Apple Watch Series 6, watchOS 7
Question marked as
Notifications go to either your Apple Watch or iPhone, but not both. If your iPhone is unlocked, you'll get notifications on your iPhone instead of your Apple Watch. If your iPhone is locked or asleep, you'll get notifications on your Apple Watch, unless your Apple Watch is locked with your passcode. For more info, see:
Notifications on your Apple Watch - Apple Support