UA 1665 then DL 5852 at Boston
San Francisco → Boston → Pittsburgh
Timetable, Boston time
07:56UA 1665 from San Francisco at the gate
14:16DL 5852 to Pittsburgh leaves the gate
6 h 20 apart on the timetable
Today
From the airport’s board at 07:27 Boston time
07:56UA 1665 is cancelled
14:16DL 5852 due to leave, no estimate yet
The last days
UA 1665 and DL 5852 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.