UA 3902 then AA 4541 at O'Hare
Rio De Janeiro → Chicago → Indianapolis
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
12:38AA 4541 to Indianapolis leaves the gate
19 h 37 apart on the timetable, overnight
AA 4541 leaves 19 h 37 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.