I was thinking of buying Korg nanokey Studio. Is it possible to use some kind of usb splitter to have it connected to 2 axolotis? So I can use keyboard for one, pads for another one, share knobs, and maybe use chaospad for both?
as far as I know that's not possible but you can connect it to board 1, connect to board 2 via din midi and pass the data through via the midi through object.
IIRC you can assign individual channels and control numbers to each controller on the nanokey Studio, so you would not have to split messages, but only find a way to feed the same MIDI signal to both devices. Where any MIDI Thru Box would do (e.g. a https://midisizer.com/midithru/midithru-original/ if you are into DIY). If there is not a lot going on (beware, if you use the Chaospad, there probably is) you could even chain the Axolotis, modifying the patch on the first Axoloti in the chain to feed MIDI in to MIDI out.
Great! As long as I can control them both, thats great! Thank you and @sevo for answering my question!