DL 8922 then DL 2022 at Philadelphia
Boston → Philadelphia → Salt Lake City
Timetable, Philadelphia time
15:09DL 8922 from Boston at the gate
18:49DL 2022 to Salt Lake City leaves the gate
3 h 40 apart on the timetable
The last days
DL 8922 and DL 2022 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.