AA 4682 then ET 3511 at O'Hare
Dayton → Chicago → Muscat
Timetable, Chicago time
19:08AA 4682 from Dayton at the gate
09:05ET 3511 to Muscat leaves the gate
13 h 57 apart on the timetable, overnight
ET 3511 leaves 13 h 57 after AA 4682 arrives on the timetable: more than half a day, so not a connection we count.