AA 6204 then OO 9912 at O'Hare
Grand Rapids → Chicago → Richmond
Timetable, Chicago time
10:30AA 6204 from Grand Rapids at the gate
07:30OO 9912 to Richmond leaves the gate
21 h apart on the timetable, overnight
OO 9912 leaves 21 h after AA 6204 arrives on the timetable: more than half a day, so not a connection we count.