should work as an insert cable btw (make sure you get your in/out ends sorted)
some clever folks on here have previously routed the CV back into the external inputs - but be WARNED - keep the Voltages LOW - you can set range to whatever max you want - 1V would be safe for now, but don’t take my word for it, find the thread(s) thbw
you can use the CV LFO to push out some sine tones back into the A4 by all accounts, amongst other things of course