UA 3902 then AA 2418 at O'Hare
Rio De Janeiro → Chicago → Indianapolis
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
09:39AA 2418 to Indianapolis leaves the gate
16 h 38 apart on the timetable, overnight
AA 2418 leaves 16 h 38 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.