DL 4907 then ET 3511 at O'Hare
New York JFK → Chicago → Muscat
Timetable, Chicago time
17:20DL 4907 from New York JFK at the gate
09:05ET 3511 to Muscat leaves the gate
15 h 45 apart on the timetable, overnight
ET 3511 leaves 15 h 45 after DL 4907 arrives on the timetable: more than half a day, so not a connection we count.