Does 'Between 9:15 and 9:30, the staff was busy arranging a return to Washington, while the President consulted his senior advisers about his remarks.' neither support nor refute 'After nine o'clock, the staff was planning to return to Washington. ', instead existing independently?
Between 9:15 and 9:30, the staff was busy arranging a return to Washington, while the President consulted his senior advisers about his remarks.###After nine o'clock, the staff was planning to return to Washington. 