AA 337 then FX 9791 at O'Hare
Dallas-Fort Worth → Chicago → Anchorage
Timetable, Chicago time
12:08AA 337 from Dallas-Fort Worth at the gate
04:00FX 9791 to Anchorage leaves the gate
15 h 52 apart on the timetable, overnight
FX 9791 leaves 15 h 52 after AA 337 arrives on the timetable: more than half a day, so not a connection we count.