B6 778 then B6 8615 at Boston
Las Vegas → Boston → Kansas City
Timetable, Boston time
05:00B6 778 from Las Vegas at the gate
08:00B6 8615 to Kansas City leaves the gate
3 h apart on the timetable
The last days
B6 778 and B6 8615 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.