AA 4919 then K4 221 at O'Hare
Milwaukee → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
12:54AA 4919 from Milwaukee at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
21 h 41 apart on the timetable, overnight
K4 221 leaves 21 h 41 after AA 4919 arrives on the timetable: more than half a day, so not a connection we count.