AA 3585 then FX 1205 at O'Hare
Key West → Chicago → Memphis
Timetable, Chicago time
21:30AA 3585 from Key West at the gate
21:20FX 1205 to Memphis leaves the gate
23 h 50 apart on the timetable, overnight
FX 1205 leaves 23 h 50 after AA 3585 arrives on the timetable: more than half a day, so not a connection we count.