the best way maybe is to set midi track 8 on the OT to say midi chanal 16 then set up the MnM auto channel to 16. So when you pick track 8 on the OT you can control any selected MnM track with your keyboard.

So I’ve experimented with this a bit. Here’s the current configuration, set up as suggested:
Novation X-Station out to OT in. OT out to the patchbay, and thru to Mono in. Mono out to the patchbay, and thru to the MD in. Patchbay sends out to other synths.

I’ve only poked around with it a bit (only had the OT two days), but it’s definitely not working. The mono starts freezing the moment the sequencer is started.