AA 3984 then AA 2784 at DFW
Rapid City → Dallas-Fort Worth → Las Vegas
Timetable, Dallas-Fort Worth time
16:35AA 3984 from Rapid City at the gate
17:17AA 2784 to Las Vegas leaves the gate
42 min apart on the timetable
The last days
AA 3984 and AA 2784 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.