AA 9950 then AA 5001 at O'Hare
Philadelphia → Chicago → Birmingham (Alabama)
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
10:30AA 5001 to Birmingham (Alabama) leaves the gate
20 h 41 apart on the timetable, overnight
AA 5001 leaves 20 h 41 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.