AA 2137 then K4 221 at O'Hare
Austin → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
09:00AA 2137 from Austin at the gate
21:20K4 221 to Cincinnati Northern Kentucky leaves the gate
12 h 20 apart on the timetable
K4 221 leaves 12 h 20 after AA 2137 arrives on the timetable: more than half a day, so not a connection we count.