Our latest release has been confirmed to resolve Android 14 QPR2 Bluetooth module issues causing connectivity issues with 5th/6th generation Galaxy Watch devices. 2nd set of upstream Bluetooth bugs we've fixed this month. Please provide feedback here:
https://discuss.grapheneos.org/d/11383-request-for-testing-and-feedback-with-bluetooth-on-android-14-qpr2-grapheneos
Sorry to see that are experiencing this. Sounds like a problem with the watch itself, since you have to reset the watch to fix the problem. Hopefully the manufacture of the watch fixes this issue soon.
Doubt it is a watch issue, only started when the Bluetooth bug started with Graphene OS
Please read here
https://discuss.grapheneos.org/d/11383-request-for-testing-and-feedback-with-bluetooth-on-android-14-qpr2-grapheneos/221