AJ
As you must know you can watch the channel lights in Ty2 to see when data is being transmitted (Tx Monitor). I watched in the Transmit tab of the All Parts Template. (With Split KB and ACMP on)
With R1 switched on and playing RH only,the ch1 light flashes as you'd expect.
If I start the style and play LH only I don't see lights flashing in time to the LH.
Very occasionally, lights do come on - in R1, 2 & 3!!! even though the R2 & 3 buttons are off, but there seems no pattern apart from the fact they go on & off together and I can't predict when it'll happen.
Tried to see what that type of data is being sent by hooking up & recording in sequencer. R1/ch1 only played back the RH notes (no chords) and R2/ch2 & 3c/ch3 appeared to be blank - certainly no note data in spite of the ghost lights.
I'm not sure where this leaves you but it does demonstrate that what you're trying for has to be possible.
And since I'd tried it thought I'd pass on the observations FWIW

John