iPhone notifications not working

Etm7320 wrote:

I’ve noticed when I have my watch connected to my phone that the notification sounds don’t work through my phone. My sleep schedule alarm doesn’t go off in the morning if I have my Apple Watch on, but it will go off if I have my watch charging. I don’t get reminder notification sounds when I have my watch on. I just checked. I had my watch on and no sounds came through my phone when I set a reminder. I took off my watch and the sound came through on my phone. Why is that? And can we make a change to allow notification sounds through the phone even if we have our watch on?

No, that has always been that way, either your get notification on the phone or watch not both.

Read here Notifications on your Apple Watch - Apple Support