same. All of the data should still be stored on the watch and the app, since that works local via Bluetooth. Sync to other services like strava or trainingpeaks should happen once the services are online. Even the external sync on the watches should work, i just updated my deezer playlist on my epix 2 without issues and with connect down.

It might be annoying, but it still works. Without a note in the app, i would not have noticed.