One keyboard for two synths and PC change: MIDI troubles

I have a setup with a Launchkey Mini Mk3, an Octatrack, a Digitone, a NOrd Drum 3p and a Microcosm.

So far i set it like this: Launchkey > OT > DN > Microcosm > ND.

The auto channel on the OT is 10
The auto channel on the DN is 10 and the PC change IN is 16.
The auto channel on the ND is 10, 1 to 6 for the pads.

So far i can control everything from the OT sequencer and from the keyboard except the DN tracks on the auto channel. What did i miss?