I have a ‘hub’ like thing from alpha shades. I can put this in pairing mode and connect multiple single remotes to this one. After that I can use that single remote to control the shades of the other remotes. All together, on one single shade. It’s this one:
RE203-8C wall mount - Alpha Tubular Motors USA (alphamotors.us)
Would it maybe be possible to copy the functionality of this into bond bridge?