Thank you in advance.
How do I use USB MIDI and 5-pin MIDI to hardware synth simultaneously?
There is now a firmware update available for Kontrol S MK3 that allows simultaneous USB / DIN MIDI
That's awesome news! Glad to hear there will be some new features coming out soon.
Matthew, I'm a new owner of the S88Mk3 and I also add my voice to ask that future firmware updates consider allowing MIDI both from USB/DIN at same time - at least in my case, I'm only trying to use it for application of my S88Mk3 connected sustain pedal to another external keyboard (so I won't have to have multiple pedals in my setup). Hopefully timing issues wouldn't be a major concern for just use of the sustain pedal function.