AA 1285 then ET 3511 at O'Hare
Dallas-Fort Worth → Chicago → Muscat
Timetable, Chicago time
16:16AA 1285 from Dallas-Fort Worth at the gate
09:05ET 3511 to Muscat leaves the gate
16 h 49 apart on the timetable, overnight
ET 3511 leaves 16 h 49 after AA 1285 arrives on the timetable: more than half a day, so not a connection we count.