It didn't really work, but in the process I got a different combo with 3 characters I called "Monkey in the Middle".
It isn't a zero-death combo but it is close to one.
It sounds like the name:
basically toss the opponent around until they get to high damage, then have your third teammate hit the opponent with a well-timed up smash.
for some reason, it's easier to do on accident than on purpose.