AA 2142 then WN 2045 at Miami
Seattle → Miami → Denver
Timetable, Miami time
06:00AA 2142 from Seattle at the gate
13:15WN 2045 to Denver leaves the gate
7 h 15 apart on the timetable
The last days
AA 2142 and WN 2045 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.