AA 3131 then ET 3511 at O'Hare
Minneapolis → Chicago → Muscat
Timetable, Chicago time
15:55AA 3131 from Minneapolis at the gate
09:05ET 3511 to Muscat leaves the gate
17 h 10 apart on the timetable, overnight
ET 3511 leaves 17 h 10 after AA 3131 arrives on the timetable: more than half a day, so not a connection we count.