Here is the scenario:  Two kids wanting to run their own trains.
Problem:  I read the last discussion (2013) and its reply stated to obtain the Walk around companion controller (Model 44907), then I read that the Walk around companion module was discontinued (2016).
Question:  The last discussion didn't go into detail so I'm presenting that detail.  If I connect two EZ command control centers (Model 44901):  One as the main connection to the track and power supply, then connect the other command control center without connecting the power or connection to the track can this support operating two trains where each kid can control their own train from each control center?  Basically providing an individual controller similar to the walk-around companion which currently I can't seem to find.

I have a simple question, I am converting my rail system from DC to DCC.  I've purchased the DCC locomotive Bachmann model, but the price was right on this new model DCC locomotive.  I do not want it's shell, a Santa Fe shell.  Is it possible that the shell from my DC locomotive (BNSF) replace the shell of the DCC locomotive?  Both locomotives are the same GP 38, and both were made by Bachmann.  In short, only a shell swap from DC to DCC.  Would there be any interferences with DCC body with a DC shell?