AA 4783 then K4 221 at O'Hare
Baltimore → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
12:59AA 4783 from Baltimore at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
21 h 36 apart on the timetable, overnight
K4 221 leaves 21 h 36 after AA 4783 arrives on the timetable: more than half a day, so not a connection we count.