so Nexus messaged me today, told me he's got least portal routes, then said wakeup, and I started diddling with the end of the chamber. Having skipped the ending as seen in this video, https://www.youtube.com/watch?v=j2SApBW1rOo
I noclipped into the chute and stayed there. Through doing this, I was able to enter the chute early when it 'opened' and save 6-7 seconds.
We need to figure out if it is indeed possible to clip into this chute, and that needs to be done first in challenge mode while recording demos so people can analyze what exactly makes for the chute to be clippable. If people can work on this, we might be closer to another timesaver, albeit extremely hard.
Here's the video I made summing it all up https://www.youtube.com/watch?v=pzgLsz-qEJo