DL 512 then DL 5258 at Atlanta
Dallas → Atlanta → Jackson (Mississippi)
Timetable, Atlanta time
18:59DL 512 from Dallas at the gate
18:00DL 5258 to Jackson (Mississippi) leaves the gate
23 h 01 apart on the timetable, overnight
DL 5258 leaves 23 h 01 after DL 512 arrives on the timetable: more than half a day, so not a connection we count.