TP 239 then DL 1956 at San Francisco
Lisbon → San Francisco → Salt Lake City
Timetable, San Francisco time
15:45TP 239 from Lisbon at the gatealso EY 2796, B6 6734
19:27DL 1956 to Salt Lake City leaves the gatealso VS 4457
3 h 42 apart on the timetable
The last days
TP 239 and DL 1956 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.