AA 3171 then ET 3511 at O'Hare
Phoenix → Chicago → Muscat
Timetable, Chicago time
09:31AA 3171 from Phoenix at the gate
09:05ET 3511 to Muscat leaves the gate
23 h 34 apart on the timetable, overnight
ET 3511 leaves 23 h 34 after AA 3171 arrives on the timetable: more than half a day, so not a connection we count.