check my Lucas guide about RAR Bairs in the "Approach" section. I talk more in-depth about when and how to use RAR Bair
Any way that is the same combo that I was talking about.
Offhand I was thinking about Pink Fresh in pools doing a reverse Bair spike at CEO, but the video was removed bc VGBC doesn't support PM anymore. So I just YouTube searched HF Neon and that was the first thing I saw haha.
The better thing to do instead of reverse Bair, is to turn around with magnet before you finish the combo and the chance of hitting also increases. I only don't recommend reversing yourself if trying to finish off a combo on floaties or any other opponent that could potentially escape, or if you don't have much momentum horizontally