AA 4525 then ET 3511 at O'Hare
Madison → Chicago → Muscat
Timetable, Chicago time
10:40AA 4525 from Madison at the gate
09:05ET 3511 to Muscat leaves the gate
22 h 25 apart on the timetable, overnight
ET 3511 leaves 22 h 25 after AA 4525 arrives on the timetable: more than half a day, so not a connection we count.