AA 3250 then K4 221 at O'Hare
San Francisco → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
13:44AA 3250 from San Francisco at the gate
10:35K4 221 to Cincinnati Northern Kentucky leaves the gate
20 h 51 apart on the timetable, overnight
K4 221 leaves 20 h 51 after AA 3250 arrives on the timetable: more than half a day, so not a connection we count.