Can somebody please explain the new dr. skip where you keep the storage to skip the explosive wall and skip the predator room. Struggling alot on it particularly the last glide to the second oob.

Trying to the zip after collecting the all the spores in the sewers but I lose the storage after the cutscene where Batman turns around and aims a batarang, I've tried using another gadget like the twin batarangs but I still lose it. I've also noticed (in the video) that he pulls out a normal batarang during the cutscene but he still keeps the storage. I've done that accidentally before and equipped the explosive gel before the cutscene plays but I still lost the storage. Quite baffled thus far

I did my first run with livesplit and used the autosplitter and it worked perfectly but it didn't split at the end of the Joker fight. I tried manually splitting at the end too but that didn't work. Is there an explanation and/or a way to fix it?