AA 4337 then ET 3511 at O'Hare
Indianapolis → Chicago → Muscat
Timetable, Chicago time
11:53AA 4337 from Indianapolis at the gate
09:05ET 3511 to Muscat leaves the gate
21 h 12 apart on the timetable, overnight
ET 3511 leaves 21 h 12 after AA 4337 arrives on the timetable: more than half a day, so not a connection we count.