AA 4448 then FX 9791 at O'Hare
Memphis → Chicago → Anchorage
Timetable, Chicago time
08:47AA 4448 from Memphis at the gate
04:00FX 9791 to Anchorage leaves the gate
19 h 13 apart on the timetable, overnight
FX 9791 leaves 19 h 13 after AA 4448 arrives on the timetable: more than half a day, so not a connection we count.