AA 1204 then CV 251 at O'Hare
Miami → Chicago → Dallas-Fort Worth
Timetable, Chicago time
07:42AA 1204 from Miami at the gate
22:10CV 251 to Dallas-Fort Worth leaves the gate
14 h 28 apart on the timetable
CV 251 leaves 14 h 28 after AA 1204 arrives on the timetable: more than half a day, so not a connection we count.