In https://www.elektron.se/wp-content/uploads/2020/04/Overbridge-User-Manual_ENG_OS2.0.39.pdf
Section 8 - Sequencing with the Digital Audio Workstation:
Once an Overbridge plugin is loaded into your DAW project, you can send MIDI to the plugin to sequence your device. The MIDI channels are the same as the track numbers, so on the Analog Four/Keys, Digitakt you use MIDI channels 1–4 for sequencing the tracks. For the Rytm, channels 1–12 is used.
Shouldn’t that say Digitone? I’m trying to figure out how to send separate MIDI for tracks 1-4 from the DAW to my DN, and I think this is the answer…