CV 251 then AA 3811 at O'Hare
Anchorage → Chicago → Omaha
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
13:47AA 3811 to Omaha leaves the gate
18 h 47 apart on the timetable, overnight
AA 3811 leaves 18 h 47 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.