UA 4659 then AA 3363 at O'Hare
Des Moines → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
17:05UA 4659 from Des Moines at the gate
16:50AA 3363 to Cincinnati Northern Kentucky leaves the gate
23 h 45 apart on the timetable, overnight
AA 3363 leaves 23 h 45 after UA 4659 arrives on the timetable: more than half a day, so not a connection we count.