Trying to figure out the best way to get a second synth to take over extra voices from a 4 voice synth, like playing 4 notes on a minilouge xd and have the 5-8 notes register on a microfreak. Also would like to get an uno synth pro to take over extra voices on the microfreak and /or the xd , etc

I have the note dispatcher on two virtual channels and then a channel filter going out to two different midi outs but this isn’t exactly what I want, because I can’t really control the dispatcher the way i want. ANY IDEAS ?