DL 1733 then DL 825 at Atlanta
Detroit → Atlanta → Las Vegas
Timetable, Atlanta time
18:06DL 1733 from Detroit at the gate
20:42DL 825 to Las Vegas leaves the gate
2 h 36 apart on the timetable
The last days
DL 1733 and DL 825 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.