Hey Richard!
Of course you're absolutely right, proper polyphonic CV is not there, but there is the behavior to not close the gate, if notes are added together to a chord, one after the other. Each one of those transmits its own velocity level, and launches it's own amp-envelope in the attached synth, but you can not turn those notes off one by one, only all at once, when the gate closes.
I don't know if this behaviour is so well documented by Propellerheads, and I think most users and developers don't know about it!
Actually also I learned about all of those details only yesterday, when I was reading the manual to 'the Charlotte' envelope-generator, and tried it for myself.
A few months ago, I tried AutoArp and was stunned about the fact it can output chords with one note and one gate CV. When it was released, I read the authors comment in the PUF, that it does this by really quickly sending the notes one after the other, so you won't notice it wasn't at the EXACT same time.
But I tried it only with my goto-synth, Antidote!
And I was disappointed it doesn't trigger an amp-envelope for each note. Now I know why! ^^
Just try the file I attached, play each sequencer lane and compare them all
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