It's very easy to do on Smashville. A bit harder to do on Lylat; very hard to do on Battlefield. I'm sure it can be done on all platforms.
Figuring out the applications for this; the Bayonetta discord thinks it could be used to harass Luma. I also think it could be used since the landing hitbox for dair is a KO move, right?
Any comments/insight would be appreciated!