AA 3390 then QF 3303 at O'Hare
Greensboro → Chicago → Toronto Pearson
Timetable, Chicago time
21:13AA 3390 from Greensboro at the gate
20:45QF 3303 to Toronto Pearson leaves the gate
23 h 32 apart on the timetable, overnight
QF 3303 leaves 23 h 32 after AA 3390 arrives on the timetable: more than half a day, so not a connection we count.