I just used the stock MIDI Keyboard script in Bitwig & it picks up the CV channel notes from the Analog Four MK2.

To send the MIDI notes for instrument & FX tracks on the Analog Four MK2, one has to press FUNC + NOTE & check SEND MIDI.

To send the MIDI notes for instrument & FX tracks on the Digitone, one has to press MIDI, select a track, then press FUNC + A knob, and select the channel they want the MIDI to be sent to.