In the lobby scene with the three elevators, Wilma and Betty go up in Elevator 3 (on the right) telling the elevator operator to "follow that car" (referring to Elevator 2).
Later, Elevator 3 returns to the lobby with Rosengravel and Gilderstone but there is no elevator operator.
Later, Elevator 3 returns to the lobby with Rosengravel and Gilderstone but there is no elevator operator.
Betty and Wilma are the only two bundled up in fur lined overcoats for no apparent reason.