AA 1926 then AA 9912 at O'Hare
St Louis → Chicago → Richmond
Timetable, Chicago time
09:00AA 1926 from St Louis at the gate
07:30AA 9912 to Richmond leaves the gate
22 h 30 apart on the timetable, overnight
AA 9912 leaves 22 h 30 after AA 1926 arrives on the timetable: more than half a day, so not a connection we count.