AA 1277 then K4 221 at O'Hare
Denver → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
18:19AA 1277 from Denver at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
16 h 16 apart on the timetable, overnight
K4 221 leaves 16 h 16 after AA 1277 arrives on the timetable: more than half a day, so not a connection we count.