I have found a inconsistent lag clip in chapter 1 on mobile.

When the g man says the first wake up, activate crouch and when the train horn happens deactivate crouch and you may glitch out of the train.

Remember it is highly inconsistent.

pog

I have only been able to do it once so it might be a while till it’s truly replacatable.

I do have a video of the time I did it and it glitched me into the back train but I think it may do otherwise.