Hi Jokeyman123,
That is a Moog Sub-37. And yes, essentially it is acting as a midi router. The Digitakt is a fun complex little box used for sampling and sequencing, and so much more. I believe you are correct in your ask! I've attached a picture of the Digitakt to show the specific set up of this channel. I'll attempt to explain but I don't know if I can do appropriate justice of how it automagically happens. I want to assume that the AUTO channel is like an ALL channel, so if it receives ALL channels, when its programmed to receive ALL and send ALL... being that I set the 16 track on the Digitakt as an AUTO channel, that specific signal going to that Channel will always be an automatic all signal path, regardless if I have that track selected, meaning... if I press the # 15 on my Digitakt (which goes to my Ju-06) and I play a note on the Casio which I have configured for #16, the Casio sends the # 16 note signal to the Digitakt's Auto channel 16... and outputs it to whatever # i selected the Digitakt, which is 15. And viola! We hear the sound of my JU-06. It is indeed a routing logic being interpreted here, well said with that! I hope I explained this okay:-)