I think it would be awesome if we could interact with the Flipper Zero using the Apple Watch, im playing with some of the app source currently to see what all could be done but I would love to see some official support for this as it provides a new potentially portable use case for the Flipper such as using it as carry on garage opener in your bag or something along those lines.
AFAIK, Apple makes this pretty simple to add using the companion app integration features of Swift on iOS so theoretically it should still be able to interact with the phone despite it being locked otherwise you may have to go down the route of the AW’s Bluetooth pairing (No idea how that would work.)