AC 501 then ET 3511 at O'Hare
Toronto Pearson → Chicago → Muscat
Timetable, Chicago time
09:23AC 501 from Toronto Pearson at the gate
09:05ET 3511 to Muscat leaves the gate
23 h 42 apart on the timetable, overnight
ET 3511 leaves 23 h 42 after AC 501 arrives on the timetable: more than half a day, so not a connection we count.