DL 8950 then DL 474 at Seattle
White Plains → Seattle → Boston
Timetable, Seattle time
14:13DL 8950 from White Plains at the gate
15:45DL 474 to Boston leaves the gate
1 h 32 apart on the timetable
Seattle’s board gives a departure time for only about 56% of its flights, so many days show no gate time.
The last days
DL 8950 and DL 474 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.