AA 2579 then UA 743 at Denver
Dallas-Fort Worth → Denver → Orlando
Timetable, Denver time
12:20AA 2579 from Dallas-Fort Worth at the gate
13:35UA 743 to Orlando leaves the gate
1 h 15 apart on the timetable
The last days
AA 2579 and UA 743 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.