AA 9950 then AA 6291 at O'Hare
Philadelphia → Chicago → Oklahoma City
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
10:00AA 6291 to Oklahoma City leaves the gate
20 h 11 apart on the timetable, overnight
AA 6291 leaves 20 h 11 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.