AA 9950 then AA 2612 at O'Hare
Philadelphia → Chicago → Houston
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
13:36AA 2612 to Houston leaves the gate
23 h 47 apart on the timetable, overnight
AA 2612 leaves 23 h 47 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.