Is there somewhere else that single segment records are posted? I heard plasticallan mentioning multiple WRs in his current posted 1st place run and assumed he meant he had both single-segment records and the full run's WR.

Not that I am aware of. I have noticed that he is posting times with his splits linked to Splits.io which might be what he's referring to. We would have to ask him to clarify to get a proper answer.

Sorry for the confusion!

On the current world record run I had literally just set the world record before beating it again for the current record. I think that is what you're referring to?