Watching an RTA WR for Oracle of Ages. Saw a very interesting glitch that can be adapted for the TAS too.
https://www.youtube.com/watch?v=yhFgLohzb0w&t=3370s
Almost all of Skull Dungeon is completely passed over via a very tricky jump similar to the Oracle of Seasons ones. Apparently, there is no concept of a "second level" or higher platform like in A Link to the Past or anything. If you
can jump to a bridge, like that, well, that's the level it is on. It is merely
visually on a different plane.
EDIT: This is a major edit. I just finished the run and Nitroz uses a completely different payload at the end. Instead of triggering the buggy Ring Box then beating Veran, they outright warp to the credits.
Honestly, I think anyone looking to re-run OoA (not as much as OoS, but some new skips or techniques seem to have been found) should probably give it a watch. I haven't seen the TAS for awhile but the above two tricks alone would be very useful for a TAS and I know the published one here doesn't use either, for instance.