QR 727 then AA 9950 at Philadelphia
Doha → Philadelphia → Chicago O'Hare
Timetable, Philadelphia time
14:50QR 727 from Doha at the gate
13:01AA 9950 to Chicago O'Hare leaves the gate
22 h 11 apart on the timetable, overnight
AA 9950 leaves 22 h 11 after QR 727 arrives on the timetable: more than half a day, so not a connection we count.