AA 2461 then ET 3511 at O'Hare
Boston → Chicago → Muscat
Timetable, Chicago time
20:12AA 2461 from Boston at the gate
09:05ET 3511 to Muscat leaves the gate
12 h 53 apart on the timetable, overnight
ET 3511 leaves 12 h 53 after AA 2461 arrives on the timetable: more than half a day, so not a connection we count.