AA 1012 then AA 1484 at DFW
Sioux Falls → Dallas-Fort Worth → Nashville
Timetable, Dallas-Fort Worth time
08:42AA 1012 from Sioux Falls at the gate
20:45AA 1484 to Nashville leaves the gate
12 h 03 apart on the timetable
AA 1484 leaves 12 h 03 after AA 1012 arrives on the timetable: more than half a day, so not a connection we count.