AA 6244 then ET 3511 at O'Hare
Detroit → Chicago → Muscat
Timetable, Chicago time
17:32AA 6244 from Detroit at the gate
09:05ET 3511 to Muscat leaves the gate
15 h 33 apart on the timetable, overnight
ET 3511 leaves 15 h 33 after AA 6244 arrives on the timetable: more than half a day, so not a connection we count.