CA 8443 then UA 4487 at O'Hare
Anchorage → Chicago → Dayton
Timetable, Chicago time
16:59CA 8443 from Anchorage at the gate
14:40UA 4487 to Dayton leaves the gate
21 h 41 apart on the timetable, overnight
UA 4487 leaves 21 h 41 after CA 8443 arrives on the timetable: more than half a day, so not a connection we count.