@klh - I have 4 different watches that I have flashed to Asteroid OS: Ticwatch C2+ (skipjack), Huawei gen1 (sturgeon), LG G Watch R (lenok), and LG Watch Urbane (bass). These sync to Android using either the Asteroid OS sync app or Gadgetbridge.
There is a UT native Asteroid OS sync app called Telescope that has yet to be updated to Focal, I believe the maintainer of this app was needing some help to figure out getting around some issues for this port.
Best regards,
Steve Berson