Hi I have med size layout DC. I run only kato ac4400 and katos sd70ace becase thay are close to the same speed I can run 2 3 or 4 locos on the same train pulling 40 + cars. From what I can understand about DCC++ it looks like I can only control 1 loco at a time? I am hopping someone might tell me if this true or false and maby point me in the down the right road. Thanks for any and all help.