CV 251 then AA 2556 at O'Hare
Anchorage → Chicago → San Diego
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
10:03AA 2556 to San Diego leaves the gate
15 h 03 apart on the timetable, overnight
AA 2556 leaves 15 h 03 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.