AA 478 then WN 674 at Miami
New York LaGuardia → Miami → Denver
Timetable, Miami time
11:41AA 478 from New York LaGuardia at the gate
16:20WN 674 to Denver leaves the gate
4 h 39 apart on the timetable
The last days
AA 478 and WN 674 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.