DL 257 then AA 889 at Boston
Amsterdam → Boston → Charlotte
Timetable, Boston time
14:13DL 257 from Amsterdam at the gate
14:54AA 889 to Charlotte leaves the gate
41 min apart on the timetable
The last days
DL 257 and AA 889 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.