AA 1622 then AA 434 at Miami
Las Vegas → Miami → Boston
Timetable, Miami time
06:13AA 1622 from Las Vegas at the gate
06:55AA 434 to Boston leaves the gate
42 min apart on the timetable
The last days
AA 1622 and AA 434 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.