AA 990 then K4 221 at O'Hare
Phoenix → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
11:39AA 990 from Phoenix at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
22 h 56 apart on the timetable, overnight
K4 221 leaves 22 h 56 after AA 990 arrives on the timetable: more than half a day, so not a connection we count.