AA 2903 then QR 8167 at O'Hare
Washington National → Chicago → Doha
Timetable, Chicago time
07:26AA 2903 from Washington National at the gate
04:40QR 8167 to Doha leaves the gate
21 h 14 apart on the timetable, overnight
QR 8167 leaves 21 h 14 after AA 2903 arrives on the timetable: more than half a day, so not a connection we count.