Links- SF Alpha hitboxes article
The vulnerability of Cody’s Bad Spray and Sodom’s Tengu Walking (b,db,d + K version) depends on when the move is input. If the input occurs while vulnerable (before the peak of reset arc, during float, or after an air block) then they are vulnerable during execution. But if you input the move after the peak of the reset arc they retain the reset invulnerability.
In fact, inputting these moves before reset causes the reset to not become invulnerable at all. This also applies to Dhalsim’s…
Courtesy of Dammit over at combovid: