As far as I can tell, this isn't possible with the Komplete Kontrol software correct?
From my understanding, this can only be done at the DAW level with MIDI assignments but, I would love to hear any comments on this. Thanks!
You can split the keyboard as a MIDI template, that is you can create the keyboard to send 2 different midi channels and ranges but this will only work in a DAW as you have guessed, KK only supports a single instrument.
You’re right. KK can’t split.
Mant DAWs have midi plugins that can help in this