Is it possible to connect 2 Boardbrain Optx V2s, to say, a Digiface inerface?

Like the title says, I'm curious if it is possible, or if anyone here has any experience connecting two, or more Boardbrain Optx V2s to a RME Digiface, or some other interface with multiple lightpipe ports. For context I'm using an M4 Max Studio with Bitwig as my DAW.