Sometimes certain effects, bonuses, or conditions state that they last until the end of the scene. At the GM’s discretion, a scene generally continues until the current narrative situation has played out. A chase scene might end when the PCs have caught their quarry or when they’ve escaped pursuit. A battle scene usually ends when one side has fled, surrendered, or been entirely dispatched. If there’s uncertainty about when a scene is considered to be over, throw it to the table and see what they think makes sense. You generally don’t have to linger in a scene after the most interesting actions and interactions have occurred -if you want to play out their implications or process the emotions but the heat of the moment has passed, that aftermath and processing can take place in its own scene.