AA 4212 then ET 3511 at O'Hare
Providence → Chicago → Muscat
Timetable, Chicago time
14:30AA 4212 from Providence at the gate
09:05ET 3511 to Muscat leaves the gate
18 h 35 apart on the timetable, overnight
ET 3511 leaves 18 h 35 after AA 4212 arrives on the timetable: more than half a day, so not a connection we count.