AA 4428 then ET 3511 at O'Hare
New Orleans → Chicago → Muscat
Timetable, Chicago time
11:00AA 4428 from New Orleans at the gate
09:05ET 3511 to Muscat leaves the gate
22 h 05 apart on the timetable, overnight
ET 3511 leaves 22 h 05 after AA 4428 arrives on the timetable: more than half a day, so not a connection we count.