Hello there, first of all i want to talk about a "bonk trick" that i use at the end of the first Agahnim's fight.
I have seen about 10 videos of and a lot of streams but i never saw someone do that trick so i'll explain it (it's really trivial tho) and talk a bit more:
At the end of the animation of Agahnim's "death", if i bonk a wall with the right timing, i can warp into the Dark World while in air, keeping the momentum of the "BONK" :p So what am i doing is that i wait for the right timing and a bonk to the top wall and that makes me quickly "sliding" to the south at the end of the dialog, right after the warp.
So now i am asking: is this something known? If yes that probably means that it's not really a time saver, and that could explain why i never saw someone doing it :) It's really about the "quantity of momentum" that you kept that help you saving some frames in Dark World i suppose !
I think that would save a little bit of time but I guess not a lot of people take advantage of it. I've known that trick for a while and never understood why it happens until you mentioned it so I guess we can try to utilize it more.