CV 251 then AA 1366 at O'Hare
Anchorage → Chicago → Denver
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
11:27AA 1366 to Denver leaves the gate
16 h 27 apart on the timetable, overnight
AA 1366 leaves 16 h 27 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.