AA 725 then K4 221 at O'Hare
Los Angeles → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
16:05AA 725 from Los Angeles at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
18 h 30 apart on the timetable, overnight
K4 221 leaves 18 h 30 after AA 725 arrives on the timetable: more than half a day, so not a connection we count.