Here's a pretty old video of a DCS Commander review by a fairly new guy to model rail roading. He had just gotten it as I remember. I haven't watched this since it was new (been a while), but as I recall he was switching back and forth between his DCC system and the DCS system somehow?
I hope this was the correct video I was thinking of. Pretty sure it is, but if not it should be on his channel around this time period. Might be worth a look if you have time here or there somewhere.