AA 3333 then AA 566 at DFW
St Louis → Dallas-Fort Worth → Denver
Timetable, Dallas-Fort Worth time
12:07AA 3333 from St Louis at the gate
18:44AA 566 to Denver leaves the gate
6 h 37 apart on the timetable
The last days
AA 3333 and AA 566 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.