Etalus vs Galvan crashes the game#235

Specifically an interaction between etalus up air and galvan air down special. Saw it on the discord and was able to recreate it with ease. Could definitely happen in a real game.
(Link of the clip on youtube)
https://www.youtubetrimmer.com/view/?v=YJMF3zmez-A&start=3019&end=3043&loop=0

skip to 50:21 in the youtube video if the link doesn’t work

It also happened to me in kragg vs galvan with the neutral special of krag vs galvan down special