UA 415 then ET 3511 at O'Hare
Milan → Chicago → Muscat
Timetable, Chicago time
18:15UA 415 from Milan at the gate
09:05ET 3511 to Muscat leaves the gate
14 h 50 apart on the timetable, overnight
ET 3511 leaves 14 h 50 after UA 415 arrives on the timetable: more than half a day, so not a connection we count.