Nice find, guys. In addition to that, on the majority of the cast, you can tech chase an up throw into another up throw(Shield grabbing, of course) on a number of stages, if you begin it between 0 and 20%, you can continue it for as long as your shield can. You just have to memorize the aspects of the character's falling animation for whoever you're doing it on. Using the dash grab's duration over the normal grab's, you can out last people who air dodge into the ground(because as soon as you land the air dodge animation ends).
Characters who fall victim to this include, but are not limited to..
Snake - All you really need to pay attention to is if the Snake B sticks a grenade, but you can chase that, and still up throw without causing the grenade to explode.
Meta Knight - His movement speed in the air is slow enough that you can actually just follow him around despite his five jumps after U-throw. Technically, the only way for Meta Knight to escape would be to glide to the ledge(you can still chase his glide if he lands onstage), Tornado on your shield, and spend the end of the animation moving it away from you, or use dimensional cape(in which you can really only guess where Meta Knight will land out of it.)
Kirby - Same as Meta Knight, only he can't escape it unless he jumps over to a platform or to the ledge. Though if he lands on a platform, you can F-air, B-air, U-air, Rest, or Forward B his landing animation.
Donkey Kong - Don't let his aerials break your shield(since you can technically powershield everything he does), and if he uses his Up special, you can follow it around. The end of the animation is long enough for you to regrab or do anything you want to him if he lands on a platform.
other characters.
