I never labeled it as a tech chase option. If they miss the tech, I'm almost sure that it can successfully land before they can roll out of the way. It's something to watch for in the rare case of a missed tech to give yourself a pretty nice advantage if you're near the edge. I'm not saying that it's this amazing tech chase, just an option for punishing a missed tech by Sheik.Marth's Fsmash hits the ground on frame 12. It takes marth 34 frames after he bthrows sheik to be actionable. A missed tech takes 26 frames to complete. It takes at least 6 frames to react to the green flash. This means that sheik must take longer than about half a second to hit the ground after a back throw for this to be a true tech chase option. I haven't tested, but I doubt that it works.