AC 750 then DL 9964 at Boston
Montréal → Boston → Atlanta
Timetable, Boston time
14:43AC 750 from Montréal at the gate
15:00DL 9964 to Atlanta leaves the gate
17 min apart on the timetable
The last days
AC 750 and DL 9964 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.