CZ 427 then AA 3456 at O'Hare
Anchorage → Chicago → Toronto Pearson
Timetable, Chicago time
05:24CZ 427 from Anchorage at the gate
20:45AA 3456 to Toronto Pearson leaves the gate
15 h 21 apart on the timetable
AA 3456 leaves 15 h 21 after CZ 427 arrives on the timetable: more than half a day, so not a connection we count.