WN 2175 then UA 488 at San Francisco
Dallas → San Francisco → Nashville
Timetable, San Francisco time
10:05WN 2175 from Dallas at the gate
12:40UA 488 to Nashville leaves the gatealso VA 8170, NZ 9139
2 h 35 apart on the timetable
The last days
WN 2175 and UA 488 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.