i personally would clock my 2 zaquencers from a midi patchbay and i appreciate the independent nature of the setup. im getting into one zaquencer handling drums and loops while the next does basslines and accompaniment. any other stuff is handled by the mpc 2500 and i can ‘bounce’ midi to the mpc from zaquencer as well as control zaquencer(s) from mpc etc etc nice hardware setup if you ask me. JJOSXL is a perfect match for zaquencer. actually the perfect addition for me would be to open up step on/off to midi cc control. that way the pads on the mpc could act directly on the sequence in zaquencer while you twist knobs for note length or something else using the BCR interface simultaneously.
im sure your request would be a simple thing once midi is fully sussed. i have a feeling a lot of stuff will be possible. no pressure of course zaq lol!