CV 251 then AA 4518 at O'Hare
Anchorage → Chicago → Memphis
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
08:06AA 4518 to Memphis leaves the gate
13 h 06 apart on the timetable, overnight
AA 4518 leaves 13 h 06 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.