AA 3393 then ET 3511 at O'Hare
Fargo → Chicago → Muscat
Timetable, Chicago time
20:33AA 3393 from Fargo at the gate
09:05ET 3511 to Muscat leaves the gate
12 h 32 apart on the timetable, overnight
ET 3511 leaves 12 h 32 after AA 3393 arrives on the timetable: more than half a day, so not a connection we count.