Control pointWhat the gather actually means
Under NBA language, the gather occurs when a player gains enough control to hold the ball, change hands, pass, shoot, or cradle it against the body. A hand merely contacting a bouncing ball does not always establish that control. On a drive, the last dribble and the gather may span different instants, so slow-motion review must locate control before labeling each foot contact a step.
The first counted step occurs when a foot or both feet touch after control is gained. A second step can then be used to stop, pass, or shoot. This framework explains the so-called gather or zero step, but it does not grant a player an unlimited extra stride.
Pivot and releaseStopping changes what each foot may do
A player who receives the ball while stationary may pivot, but the landing sequence determines the available pivot after a moving gather. The pivot foot may be lifted to pass or shoot only if the ball is released before that foot returns to the floor. A player may jump from the pivot foot, but cannot land while still holding the ball. Starting a dribble is stricter: the ball must leave the hand before the pivot foot is lifted.
Rulebooks phrase moving catches, jump stops, and the gather differently, so a legal professional move should not automatically be assumed legal in every college, school, or international competition.
Common argument
"That was obviously three steps"
Sometimes it was. But the count only matters after control begins. If the player is still gathering the ball on the first contact, that early foot touch may not be a counted step at all, which is why the same clip gets judged differently by fans and officials.