AA 4450 then CV 251 at O'Hare
Madison → Chicago → Dallas-Fort Worth
Timetable, Chicago time
06:21AA 4450 from Madison at the gate
22:10CV 251 to Dallas-Fort Worth leaves the gate
15 h 49 apart on the timetable
CV 251 leaves 15 h 49 after AA 4450 arrives on the timetable: more than half a day, so not a connection we count.