AA 2998 then K4 221 at O'Hare
Los Angeles → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
15:59AA 2998 from Los Angeles at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
18 h 36 apart on the timetable, overnight
K4 221 leaves 18 h 36 after AA 2998 arrives on the timetable: more than half a day, so not a connection we count.