AA 53 then DL 506 at Miami
Rome → Miami → Seattle
Timetable, Miami time
17:30AA 53 from Rome at the gate
18:15DL 506 to Seattle leaves the gate
45 min apart on the timetable
The last days
AA 53 and DL 506 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.