UA 623 then ET 3511 at O'Hare
New York LaGuardia → Chicago → Muscat
Timetable, Chicago time
10:56UA 623 from New York LaGuardia at the gate
09:05ET 3511 to Muscat leaves the gate
22 h 09 apart on the timetable, overnight
ET 3511 leaves 22 h 09 after UA 623 arrives on the timetable: more than half a day, so not a connection we count.