AA 1764 then K4 221 at O'Hare
Austin → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
18:45AA 1764 from Austin at the gate
16:20K4 221 to Cincinnati Northern Kentucky leaves the gate
21 h 35 apart on the timetable, overnight
K4 221 leaves 21 h 35 after AA 1764 arrives on the timetable: more than half a day, so not a connection we count.