Honestly, I have no idea what you're saying there potato.
When the ball is gathered means the dribble has ended or when a player has caught the ball...typically (but not always) when two hands are on the ball.
Regardless of rule set, determining the pivot foot begins when the dribble has ended/ball is caught (or gathered). Depending on if a foot is on floor, both feet on the floor, or both feet are in the air when the ball is caught/gathered/dribble has ended will determine what the player will next be able to do.