AA 4643 then UA 3907 at O'Hare
Norfolk → Chicago → Cleveland
Timetable, Chicago time
13:52AA 4643 from Norfolk at the gate
07:30UA 3907 to Cleveland leaves the gate
17 h 38 apart on the timetable, overnight
UA 3907 leaves 17 h 38 after AA 4643 arrives on the timetable: more than half a day, so not a connection we count.