It is possible to run two copies (same version) of MC at the same time on one PC. See "Tools/General/Advanced/Allow multiple instance to run at one time". It is also possible to detach the Display from the main User Interface (Ctrl-6), and resize the detached window as required.
So, you could try starting two copies of MC, have one watch one channel, in a detached windows, and the other watch another channel, in a detached window. Then place the two windows as you please.
I haven't tested this at all. While MC can run two copies simultaneously, there is no guarantee it won't cause problems. But someone could give it a try.