AA 9950 then AA 3356 at O'Hare
Philadelphia → Chicago → Memphis
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
11:55AA 3356 to Memphis leaves the gate
22 h 06 apart on the timetable, overnight
AA 3356 leaves 22 h 06 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.