Currently my Apple Watch and my iPhone are estranged due to software upgrades, I assume.
The first time I noticed Apple Pay on the watch wasn’t comunnicating with Apple Pay on the phone was the last time I used Apple Pay in the meat world on either actually. I liked running tabs on my spending. I did NOT like that it was keeping two sets of books.
Alarms aren’t propagating
Some of it is due to using airplane mode as a Do Not Disturb focus in places I don’t want phone rings.