UA 3902 then AA 3523 at O'Hare
Rio De Janeiro → Chicago → Cincinnati Northern Kentucky
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
10:00AA 3523 to Cincinnati Northern Kentucky leaves the gate
16 h 59 apart on the timetable, overnight
AA 3523 leaves 16 h 59 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.