Hallways, literally, conceptually, and structurally are used as transition spaces.
From Danny triking in the Green Hallway and ending up in a dead end with The Grady Girls, to Wendy finding herself in a red hallway coming up to an Elevator about to gush blood, or Jack throwing around coffee rings and walking into remnants of a party with half-filled balloons and puddles of streamers on the floor: hallways begin in one set of mind and end in another.