DL 1012 then DL 2718 at Atlanta
Memphis → Atlanta → Gulfport
Timetable, Atlanta time
12:54DL 1012 from Memphis at the gate
12:43DL 2718 to Gulfport leaves the gate
23 h 49 apart on the timetable, overnight
DL 2718 leaves 23 h 49 after DL 1012 arrives on the timetable: more than half a day, so not a connection we count.