UA 3593 then AA 9912 at O'Hare
Providence → Chicago → Richmond
Timetable, Chicago time
11:48UA 3593 from Providence at the gate
07:30AA 9912 to Richmond leaves the gate
19 h 42 apart on the timetable, overnight
AA 9912 leaves 19 h 42 after UA 3593 arrives on the timetable: more than half a day, so not a connection we count.