During the dribble, there is no "Gather" in Highschool or College. It is about when the Pivot is established. Once established, it cannot be picked up and returned to the floor. In Queen's case, it looked as if he established the pivot, took a step and then returned the pivot to the floor as he was shooting. It was close, but he also did the same on a few of his drives. If they let it go earlier in the game, they weren't going to call it there.
When a player receives a pass, they can also travel by lifting the pivot before dribbling. You can only pass or shoot once you lift the pivot before dribbling.
For those of you interested, it's covered under rule 4-44 in the NFHS Rulebook, and as far as I know, the rule is also applied at all college levels.