Rudy
I tried both Cab1 and TMCC command types for both the TMCC caboose and the TMCC engine. I'm thinking it's just the way Legacy builds a train vs a Cab1. I'm going to pull out my TMCC base tonight and give it a try. I'm thinking that TMCC doesn't differentiate between a forward facing front engine and a forward facing middle engine like Legacy does.
While the TrainLink is an option, it is a couple of button pushes extra to get the desired effect of the caboose and engine interacting.
But on a side note, A Legacy Scale Caboose needs to be made. I see a lot of cool possibilities there.