AA 2928 then FX 9791 at O'Hare
Houston → Chicago → Anchorage
Timetable, Chicago time
11:58AA 2928 from Houston at the gate
04:00FX 9791 to Anchorage leaves the gate
16 h 02 apart on the timetable, overnight
FX 9791 leaves 16 h 02 after AA 2928 arrives on the timetable: more than half a day, so not a connection we count.