Yea as @coyoteboy said, I would try taking advantage of the second dirt channel and program some midi CCs on the aftershock to turn the second channel on and off.
I’ve done this for years with my La lady. Though I cheat and use CCs for I/O routing, that way I can save if only the low gain channel is on, or both channels are on to the hub scenes, otherwise it would always load with the low gain channel only if using the external switch midi cc. It still has its places, such as for A/B selecting the 2 channels.
I think i understand what you are getting at, just slow on the uptake. Is this something the manual describes in detail how to configure?
I saw this post earlier and figured that was what was being addressed but wasnt 100% sure, lol.. was hoping someone would chime in,
AS ch1 —>( )—>AS ch2–>
Thank you both