DL 1680 then DL 748 at Atlanta
Cincinnati → Atlanta → Las Vegas
Timetable, Atlanta time
21:43DL 1680 from Cincinnati at the gate
10:07DL 748 to Las Vegas leaves the gate
12 h 24 apart on the timetable, overnight
DL 748 leaves 12 h 24 after DL 1680 arrives on the timetable: more than half a day, so not a connection we count.