Max BR1 Pro 5G + Balance One

Hoping for some help/creative ideas… I have a Max BR1 Pro 5G with WAN input (old 4G cell modem) + Wifi as WAN + 5G Cell. Lan 1 outputs to WAN 1 on a Balance One. The Balance One also has two other WAN inputs (p2p wifi & starlink).

Is there a way to have the two devices recognize each other and to effectively act as one device for WAN load balancing and Speed Fusion bonding?

Right now I have it so that the BR1 sources all have to be managed by the BR1 and only appear as a single source for the Balance One.

Any ideas? Am I missing something?