DL 860 then CM 2535 at San Francisco
Boston → San Francisco → Reno
Timetable, San Francisco time
13:51DL 860 from Boston at the gatealso WS 7646
20:45CM 2535 to Reno leaves the gate
6 h 54 apart on the timetable
The last days
DL 860 and CM 2535 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.