AA 4229 then ET 3511 at O'Hare
Knoxville → Chicago → Muscat
Timetable, Chicago time
18:15AA 4229 from Knoxville at the gate
09:05ET 3511 to Muscat leaves the gate
14 h 50 apart on the timetable, overnight
ET 3511 leaves 14 h 50 after AA 4229 arrives on the timetable: more than half a day, so not a connection we count.