.33 x 6000' = 2000' lateral seperation
Sometimes I'd rather maintain visual seperation vs. waiting for the radar to see the movement, have the controller try to figure out what the intent of the movement is for, and for him to transmit a new vector to my aircraft.
In some incidents the guys at the pointy end have a much better idea of what's happening. Did some BFM with a China Southern 747 going into LAX years ago. They turned base from the north downwind for Rwy 24R. They ended up south of 25L. Unfortunately that's the runway we were landing on.
Co-altitude, nearest closure was 1700'.