DL 777 then DL 678 at Atlanta
Las Vegas → Atlanta → New Orleans
Timetable, Atlanta time
17:49DL 777 from Las Vegas at the gate
17:46DL 678 to New Orleans leaves the gate
23 h 57 apart on the timetable, overnight
DL 678 leaves 23 h 57 after DL 777 arrives on the timetable: more than half a day, so not a connection we count.