AA 488 then F9 1342 at DFW
Memphis → Dallas-Fort Worth → Chicago O'Hare
Timetable, Dallas-Fort Worth time
09:05AA 488 from Memphis at the gate
06:55F9 1342 to Chicago O'Hare leaves the gate
21 h 50 apart on the timetable, overnight
F9 1342 leaves 21 h 50 after AA 488 arrives on the timetable: more than half a day, so not a connection we count.