CV 21 then AA 1312 at O'Hare
Anchorage → Chicago → Jacksonville
Timetable, Chicago time
22:27CV 21 from Anchorage at the gate
19:30AA 1312 to Jacksonville leaves the gate
21 h 03 apart on the timetable, overnight
AA 1312 leaves 21 h 03 after CV 21 arrives on the timetable: more than half a day, so not a connection we count.