DL 2662 then DL 825 at Atlanta
Toronto → Atlanta → Las Vegas
Timetable, Atlanta time
08:49DL 2662 from Toronto at the gate
21:15DL 825 to Las Vegas leaves the gate
12 h 26 apart on the timetable
DL 825 leaves 12 h 26 after DL 2662 arrives on the timetable: more than half a day, so not a connection we count.