Thank you very much for your message.
I am not particularly bothered about the interaction between the watch and the phone - in fact, I like it. The problem is rather the ’confusion’ between the phone and the iPad. If I am wearing the watch, it alerts when there is a notification and the iPad rings but the phone stays silent. If there is a call, the watch alerts and the iPad rings, but the phone stays silent. [The phone is not on ‘Do not disturb’ and volume is set to max.] I’m sure they all used to alert because I found it unnerving. I’m not even sure the phone can ring anymore because I use CarPlay in my car.
If I say ‘Hey Siri’, the phone often responds - not the iPad that I usually wanted when the two of them are side by side. Sometimes they both do though - it’s all rather random. There doesn’t seem to be a law of precedence and no way to set one. I have an iPad Pro, iPhone X and and Apple Watch 3. I have not owned an iPhone or Watch before. It is kind of unnerving how they all stick together the way they do.