AA 3768 then UA 2645 at DFW
Rapid City → Dallas-Fort Worth → Newark
Timetable, Dallas-Fort Worth time
13:45AA 3768 from Rapid City at the gate
14:40UA 2645 to Newark leaves the gate
55 min apart on the timetable
The last days
AA 3768 and UA 2645 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.