AA 520 then AA 1287 at DFW
Grand Rapids → Dallas-Fort Worth → Miami
Timetable, Dallas-Fort Worth time
15:21AA 520 from Grand Rapids at the gate
16:06AA 1287 to Miami leaves the gate
45 min apart on the timetable
The last days
AA 520 and AA 1287 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.