Have you considered programming an Axoloti to do the MIDI splitting for you? I just got mine in the post, planning to spend some of my xmas break building some loop+audio input FX synced to MIDI Clock configurations. Whether or not I’ll manage it who knows, but having browsed the docs, you can do a lot with what’s coming to its MIDI In and send it to the MIDI Out fairly easily. They are cheap too.

N.B. I am not volunteering :slight_smile: I am famously bad at ‘holiday’ projects. I’ll probably get it done by Easter…