UA 3902 then AA 6438 at O'Hare
Rio De Janeiro → Chicago → Marion
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
08:25AA 6438 to Marion leaves the gate
15 h 24 apart on the timetable, overnight
AA 6438 leaves 15 h 24 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.