UA 3902 then AA 3972 at O'Hare
Rio De Janeiro → Chicago → Bloomington-Normal
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
12:59AA 3972 to Bloomington-Normal leaves the gate
19 h 58 apart on the timetable, overnight
AA 3972 leaves 19 h 58 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.