OK...rethinking track plan for 2 operators:  2 track layouts for 2 locomotives with one DCC Bachmann command system  for one operator. Then a second track layout for 2 locomotives with ANOTHER, a SECOND DCC BaCHMANN command system for a second operator.   TWO SEPARATE INDEPENDENT TRACK LAYOUTS, NOT CONNECTED IN ANY WAY TO EACH OTHER....EXCEPT SIDE BY SIDE ON THE SAME PLATFORM.

I have one Bachmann DCC EZ Command Plus system.  Now I want to run 4 DCC locomotives, and I "know" I can do that. But I want a two man operating system: One person running 2 programmed trains and the other person running the other 2 programed trains....too crowded using one controller...so my question is can I buy another Bachmann DCC EZ Command Plus system and connect the two to the complete track layout?  All 4 trains going everywhere controlled by 2 people at the same time.  Any problems?  Wiring both system to the complete track layout, running all 4 at the same time by 2 different people. Programming 2 trains on different numbers on the two controllers.  Or should I ask Elon Musk to connect them?