AA 2975 then ET 3511 at O'Hare
Minneapolis → Chicago → Muscat
Timetable, Chicago time
17:26AA 2975 from Minneapolis at the gate
09:05ET 3511 to Muscat leaves the gate
15 h 39 apart on the timetable, overnight
ET 3511 leaves 15 h 39 after AA 2975 arrives on the timetable: more than half a day, so not a connection we count.