I'm afraid the Input Transformer cannot do that.
The only thing I can think of that might work (and, purely hypothetical, because I don't even know if such an instrument as the following even exists.. maybe in Reaktor?)..
You'd need to send those MIDI sequences into another MIDI Instrument which, itself, is monophonic, and can retransmit the single playing note out to MIDI again. But, like I said, I know of no such instrument.