UA 2802 then ET 3511 at O'Hare
Houston → Chicago → Muscat
Timetable, Chicago time
10:11UA 2802 from Houston at the gate
09:05ET 3511 to Muscat leaves the gate
22 h 54 apart on the timetable, overnight
ET 3511 leaves 22 h 54 after UA 2802 arrives on the timetable: more than half a day, so not a connection we count.