AA 4151 then KJ 242 at O'Hare
Jacksonville → Chicago → Dallas-Fort Worth
Timetable, Chicago time
14:29AA 4151 from Jacksonville at the gate
11:40KJ 242 to Dallas-Fort Worth leaves the gate
21 h 11 apart on the timetable, overnight
KJ 242 leaves 21 h 11 after AA 4151 arrives on the timetable: more than half a day, so not a connection we count.