TP 237 then WN 1640 at San Francisco
Lisbon → San Francisco → Las Vegas
Timetable, San Francisco time
14:45TP 237 from Lisbon at the gatealso EY 2746, B6 6774
21:30WN 1640 to Las Vegas leaves the gate
6 h 45 apart on the timetable
The last days
TP 237 and WN 1640 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.