AA 3403 then ET 3511 at O'Hare
Greenville-Spartanburg → Chicago → Muscat
Timetable, Chicago time
20:13AA 3403 from Greenville-Spartanburg at the gate
09:05ET 3511 to Muscat leaves the gate
12 h 52 apart on the timetable, overnight
ET 3511 leaves 12 h 52 after AA 3403 arrives on the timetable: more than half a day, so not a connection we count.