AA 3731 then ET 3511 at O'Hare
Greenville-Spartanburg → Chicago → Muscat
Timetable, Chicago time
18:01AA 3731 from Greenville-Spartanburg at the gate
09:05ET 3511 to Muscat leaves the gate
15 h 04 apart on the timetable, overnight
ET 3511 leaves 15 h 04 after AA 3731 arrives on the timetable: more than half a day, so not a connection we count.