B6 111 then ET 3511 at O'Hare
Boston → Chicago → Muscat
Timetable, Chicago time
12:00B6 111 from Boston at the gate
09:05ET 3511 to Muscat leaves the gate
21 h 05 apart on the timetable, overnight
ET 3511 leaves 21 h 05 after B6 111 arrives on the timetable: more than half a day, so not a connection we count.