AA 3174 then ET 3511 at O'Hare
Miami → Chicago → Muscat
Timetable, Chicago time
11:05AA 3174 from Miami at the gate
09:05ET 3511 to Muscat leaves the gate
22 h apart on the timetable, overnight
ET 3511 leaves 22 h after AA 3174 arrives on the timetable: more than half a day, so not a connection we count.