AA 3077 then K4 221 at O'Hare
Las Vegas → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
11:52AA 3077 from Las Vegas at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
22 h 43 apart on the timetable, overnight
K4 221 leaves 22 h 43 after AA 3077 arrives on the timetable: more than half a day, so not a connection we count.