A friend has been running his LionChief Plus diesel on our club’s modular layout concurrently with other locos on the same layout that were using both DCS and/or TMCC with no apparent issues for anything on the layout, so I don’t think BlueTooth would have any problems with center rail communication. BlueTooth only uses the rails for receiving power, it’s communication is direct from the controller to the device, much like it is with radio control.
Bill in FtL