UA 3902 then AA 4023 at O'Hare
Rio De Janeiro → Chicago → Richmond
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
08:46AA 4023 to Richmond leaves the gate
15 h 45 apart on the timetable, overnight
AA 4023 leaves 15 h 45 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.