CZ 435 then AA 4780 at O'Hare
Anchorage → Chicago → Buffalo
Timetable, Chicago time
17:05CZ 435 from Anchorage at the gate
08:00AA 4780 to Buffalo leaves the gate
14 h 55 apart on the timetable, overnight
AA 4780 leaves 14 h 55 after CZ 435 arrives on the timetable: more than half a day, so not a connection we count.