AA 9786 then CV 251 at O'Hare
Phoenix → Chicago → Dallas-Fort Worth
Timetable, Chicago time
07:10AA 9786 from Phoenix at the gate
22:10CV 251 to Dallas-Fort Worth leaves the gate
15 h apart on the timetable
CV 251 leaves 15 h after AA 9786 arrives on the timetable: more than half a day, so not a connection we count.