he… maybe…
what we need is to have the same settings for the 2 mono channels, nothing more? he… yes something more: the pan settings have to be left and right, but that’s a detail.
if you build a small device that listen to all changes on aux1 and copy it to aux2, with midi over ethernet. You can see my post about an arduino remote control device…
for the pan settings, you should write an exception, to ignore them or set them to the opposite… everything is possible
Arduino-based remote control for QU16
https://forum.arduino.cc/index.php?topic=230326.msg1661833