AA 2152 then UA 3907 at O'Hare
Washington National → Chicago → Cleveland
Timetable, Chicago time
17:27AA 2152 from Washington National at the gate
07:30UA 3907 to Cleveland leaves the gate
14 h 03 apart on the timetable, overnight
UA 3907 leaves 14 h 03 after AA 2152 arrives on the timetable: more than half a day, so not a connection we count.