UA 598 then WN 1874 at Detroit
Newark → Detroit → Denver
Timetable, Detroit time
23:39UA 598 from Newark at the gate
06:40WN 1874 to Denver leaves the gate
7 h 01 apart on the timetable, overnight
The last days
UA 598 and WN 1874 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.