AA 1652 then QR 8167 at O'Hare
Philadelphia → Chicago → Doha
Timetable, Chicago time
07:27AA 1652 from Philadelphia at the gate
04:40QR 8167 to Doha leaves the gate
21 h 13 apart on the timetable, overnight
QR 8167 leaves 21 h 13 after AA 1652 arrives on the timetable: more than half a day, so not a connection we count.