AA 4994 then FX 9791 at O'Hare
Oklahoma City → Chicago → Anchorage
Timetable, Chicago time
09:10AA 4994 from Oklahoma City at the gate
04:00FX 9791 to Anchorage leaves the gate
18 h 50 apart on the timetable, overnight
FX 9791 leaves 18 h 50 after AA 4994 arrives on the timetable: more than half a day, so not a connection we count.