DL 755 then DL 2718 at Atlanta
Las Vegas → Atlanta → Gulfport
Timetable, Atlanta time
12:46DL 755 from Las Vegas at the gate
12:43DL 2718 to Gulfport leaves the gate
23 h 57 apart on the timetable, overnight
DL 2718 leaves 23 h 57 after DL 755 arrives on the timetable: more than half a day, so not a connection we count.