Open_Mike, wow. Thank you for the in-depth information. I am starting to get a better understanding of things. The Novation Circuit and the Novation Circuit Mono station do have USB midi as well as midi din, so I see now the added flexibility of using the USB connections on the ICM. And, the Moog Subsequent 37 also has USB midi in addition to its midi din. Yes!
I am going to read up on all of this a bit more and have a solid thing-through of the set up. As soon as I feel I have gleaned some addition understanding, I shall reply once more if it would not be an inconvenience, just to get another spot-check on my thinking.
Gratefully,
Jeff