AA 4023 then OO 9912 at O'Hare
Richmond → Chicago → Richmond
Timetable, Chicago time
14:06AA 4023 from Richmond at the gate
07:30OO 9912 to Richmond leaves the gate
17 h 24 apart on the timetable, overnight
OO 9912 leaves 17 h 24 after AA 4023 arrives on the timetable: more than half a day, so not a connection we count.