DL 3061 then DL 825 at Atlanta
Columbia → Atlanta → Las Vegas
Timetable, Atlanta time
08:15DL 3061 from Columbia at the gate
21:15DL 825 to Las Vegas leaves the gate
13 h apart on the timetable
DL 825 leaves 13 h after DL 3061 arrives on the timetable: more than half a day, so not a connection we count.