I have recently been experimenting with finding a possible Ch.5 skip which could save around 4 minutes. I have recently discovered that on section 2 where you have to pull the levers to raise the steps, if you raise them up in the opposite direction so the closest step to you is all the way up. You then climb the stairs and jump into the archway on the and walk around the arch. I have been able to clip climb to get on top of the section 2 entrance but haven't found a way to get any closer to get into the level exit room.

Do you have a video of this?