AA 2374 then UA 1994 at DFW
Detroit → Dallas-Fort Worth → Denver
Timetable, Dallas-Fort Worth time
13:41AA 2374 from Detroit at the gate
16:55UA 1994 to Denver leaves the gate
3 h 14 apart on the timetable
The last days
AA 2374 and UA 1994 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.