AA 2779 then ET 3511 at O'Hare
Boston → Chicago → Muscat
Timetable, Chicago time
17:36AA 2779 from Boston at the gate
09:05ET 3511 to Muscat leaves the gate
15 h 29 apart on the timetable, overnight
ET 3511 leaves 15 h 29 after AA 2779 arrives on the timetable: more than half a day, so not a connection we count.