WN 314 then DL 2615 at Atlanta
Nashville → Atlanta → Sioux Falls
Timetable, Atlanta time
19:20WN 314 from Nashville at the gate
18:16DL 2615 to Sioux Falls leaves the gate
22 h 56 apart on the timetable, overnight
DL 2615 leaves 22 h 56 after WN 314 arrives on the timetable: more than half a day, so not a connection we count.