I may be wrong, I have been before, but I thought John was able to use electro couplers but said it was a royal PITA. I have not looked closely at this engine. I know others have installed TMCC and electro couplers inside a K-Line Plymouth which may be even smaller than the 44 tonner so who knows.
Since MTH offers a command 44 tonner and I run both TMCC and DCS I haven't had any motivation to try putting command in the Bachmann engine.
Pete