AA 4191 then KJ 242 at O'Hare
Rochester (ROC) → Chicago → Dallas-Fort Worth
Timetable, Chicago time
12:37AA 4191 from Rochester (ROC) at the gate
11:40KJ 242 to Dallas-Fort Worth leaves the gate
23 h 03 apart on the timetable, overnight
KJ 242 leaves 23 h 03 after AA 4191 arrives on the timetable: more than half a day, so not a connection we count.