AA 6246 then K4 221 at O'Hare
Nashville → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
19:51AA 6246 from Nashville at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
14 h 44 apart on the timetable, overnight
K4 221 leaves 14 h 44 after AA 6246 arrives on the timetable: more than half a day, so not a connection we count.