WN 1553 then AA 437 at Boston
Denver → Boston → Charlotte
Timetable, Boston time
16:55WN 1553 from Denver at the gate
18:51AA 437 to Charlotte leaves the gate
1 h 56 apart on the timetable
The last days
WN 1553 and AA 437 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.