AA 3768 then AA 939 at DFW
Rapid City → Dallas-Fort Worth → San Francisco
Timetable, Dallas-Fort Worth time
13:45AA 3768 from Rapid City at the gate
20:38AA 939 to San Francisco leaves the gate
6 h 53 apart on the timetable
The last days
AA 3768 and AA 939 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.