CV 251 then AA 4583 at O'Hare
Anchorage → Chicago → Raleigh-Durham
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
10:00AA 4583 to Raleigh-Durham leaves the gate
15 h apart on the timetable, overnight
AA 4583 leaves 15 h after CV 251 arrives on the timetable: more than half a day, so not a connection we count.