AA 9950 then AA 3731 at O'Hare
Philadelphia → Chicago → Greenville-Spartanburg
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
13:10AA 3731 to Greenville-Spartanburg leaves the gate
23 h 21 apart on the timetable, overnight
AA 3731 leaves 23 h 21 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.