DL 1668 then DL 825 at Atlanta
Indianapolis → Atlanta → Las Vegas
Timetable, Atlanta time
22:00DL 1668 from Indianapolis at the gate
20:42DL 825 to Las Vegas leaves the gate
22 h 42 apart on the timetable, overnight
DL 825 leaves 22 h 42 after DL 1668 arrives on the timetable: more than half a day, so not a connection we count.