Is it possible to sync Bangle.js 2 time to smartphone time?

I've been testing to make Bangle.js 2 determine its clock drift and accuracy from advertisements just doesn't seem to be enough to do that (quickly enough).

There is still scan response. I will try the hack with SoftDevice >=6.1 with updating timestamp in scan response static buffer on the fly (there is even BLE_GAP_EVT_SCAN_REQ_REPORT event you get when someone requests scan response, see e.g. this) and see whether it breaks or softdevice will pick up the changes.

next I'm going to test connecting watch to current time device and sending current time via that connection with 1 ms accuracy (custom format).

That may be easier and more predictable after all.