AA 3769 then CV 251 at O'Hare
Rochester (RST) → Chicago → Dallas-Fort Worth
Timetable, Chicago time
08:49AA 3769 from Rochester (RST) at the gate
22:10CV 251 to Dallas-Fort Worth leaves the gate
13 h 21 apart on the timetable
CV 251 leaves 13 h 21 after AA 3769 arrives on the timetable: more than half a day, so not a connection we count.