AA 6312 then FX 9791 at O'Hare
Erie → Chicago → Anchorage
Timetable, Chicago time
09:10AA 6312 from Erie 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 6312 arrives on the timetable: more than half a day, so not a connection we count.