DL 516 then WN 198 at Atlanta
Dallas → Atlanta → Nashville
Timetable, Atlanta time
09:15DL 516 from Dallas at the gate
21:35WN 198 to Nashville leaves the gate
12 h 20 apart on the timetable
WN 198 leaves 12 h 20 after DL 516 arrives on the timetable: more than half a day, so not a connection we count.