DL 706 then DL 711 at Atlanta
Denver → Atlanta → Las Vegas
Timetable, Atlanta time
18:01DL 706 from Denver at the gate
17:15DL 711 to Las Vegas leaves the gate
23 h 14 apart on the timetable, overnight
DL 711 leaves 23 h 14 after DL 706 arrives on the timetable: more than half a day, so not a connection we count.