AA 2907 then FX 9791 at O'Hare
New York JFK → Chicago → Anchorage
Timetable, Chicago time
09:05AA 2907 from New York JFK at the gate
04:00FX 9791 to Anchorage leaves the gate
18 h 55 apart on the timetable, overnight
FX 9791 leaves 18 h 55 after AA 2907 arrives on the timetable: more than half a day, so not a connection we count.