AA 3197 then FX 9791 at O'Hare
Omaha → Chicago → Anchorage
Timetable, Chicago time
10:00AA 3197 from Omaha at the gate
04:00FX 9791 to Anchorage leaves the gate
18 h apart on the timetable, overnight
FX 9791 leaves 18 h after AA 3197 arrives on the timetable: more than half a day, so not a connection we count.