AA 1254 then AA 622 at DFW
Nashville → Dallas-Fort Worth → Milwaukee
Timetable, Dallas-Fort Worth time
12:34AA 1254 from Nashville at the gate
07:00AA 622 to Milwaukee leaves the gate
18 h 26 apart on the timetable, overnight
AA 622 leaves 18 h 26 after AA 1254 arrives on the timetable: more than half a day, so not a connection we count.