AA 994 then F9 1342 at DFW
Knoxville → Dallas-Fort Worth → Chicago O'Hare
Timetable, Dallas-Fort Worth time
07:40AA 994 from Knoxville at the gate
06:55F9 1342 to Chicago O'Hare leaves the gate
23 h 15 apart on the timetable, overnight
F9 1342 leaves 23 h 15 after AA 994 arrives on the timetable: more than half a day, so not a connection we count.