Cool!
Full disclaimer, I haven’t tried this setup (I’m just waiting on some parts to build the 2host) but it should be what you need.
Also, as you have an Organelle M (which features a built in MIDI interface), you could try a USB > MIDI interface with the Norns to connect the two, if you have one around. Any of these cheap adapters should do the trick: (with another DIN > 1/8" jack adapter)