AA 2575 then UA 2019 at Phoenix
Boston → Phoenix → Newark
Timetable, Phoenix time
13:59AA 2575 from Boston at the gate
22:59UA 2019 to Newark leaves the gate
9 h apart on the timetable
The last days
AA 2575 and UA 2019 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.