UA 3902 then AA 4770 at O'Hare
Rio De Janeiro → Chicago → Columbus (Ohio)
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
11:57AA 4770 to Columbus (Ohio) leaves the gate
18 h 56 apart on the timetable, overnight
AA 4770 leaves 18 h 56 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.