AA 6339 then ET 3511 at O'Hare
Kansas City → Chicago → Muscat
Timetable, Chicago time
20:09AA 6339 from Kansas City at the gate
09:05ET 3511 to Muscat leaves the gate
12 h 56 apart on the timetable, overnight
ET 3511 leaves 12 h 56 after AA 6339 arrives on the timetable: more than half a day, so not a connection we count.