I was messing around with lag clipping, and when I clipped out of the Tutorial Center, I ended up below the map with this door in the empty space: https://imgur.com/a/DDmHgnL

It seems to only exist in speedrun mode, and going through it takes you to Clockwork Relic (Normal Mode). Is this already well known? Is/was this supposed to be a level when speedrun mode is finished?

I understand that if you save Violet first or second nothing happens, and if you save her third or fourth you skip one or both intermissions. But what happens when you save her last? Does the game crash? Does the game not let you enter the final level so you're unable to beat it? Does something else happen, or does nothing happen at all?

Yeah, I noticed the box moves much less if you slam it down.

I know where the 5th box is and how to get to it, but how would you get all 5 of them to the end?