UA 66 then ET 3511 at O'Hare
Hartford → Chicago → Muscat
Timetable, Chicago time
14:29UA 66 from Hartford at the gate
09:05ET 3511 to Muscat leaves the gate
18 h 36 apart on the timetable, overnight
ET 3511 leaves 18 h 36 after UA 66 arrives on the timetable: more than half a day, so not a connection we count.