Alioune tweeted about this a while ago. If you move forward or backward before doing a link you can create a true one frame link. This happens because the input buffer shuts off if you move before doing a link.
From @Wikum i know that this combo is possible but it’s incredibly hard - df.hp cc (crush counter), slight walk forward, cr.mp, mk rebellion, cr.mp, super
Post any just frame/non input buffer combos you guys come up with.