AA 3224 then AA 2151 at O'Hare
Richmond → Chicago → Nashville
Timetable, Chicago time
08:51AA 3224 from Richmond at the gate
21:10AA 2151 to Nashville leaves the gate
12 h 19 apart on the timetable
AA 2151 leaves 12 h 19 after AA 3224 arrives on the timetable: more than half a day, so not a connection we count.