3S 440 then ET 3511 at O'Hare
Frankfurt am Main → Chicago → Muscat
Timetable, Chicago time
18:123S 440 from Frankfurt am Main at the gate
09:05ET 3511 to Muscat leaves the gate
14 h 53 apart on the timetable, overnight
ET 3511 leaves 14 h 53 after 3S 440 arrives on the timetable: more than half a day, so not a connection we count.