UA 3941 then CM 2440 at San Francisco
Washington → San Francisco → Fresno
Timetable, San Francisco time
14:07UA 3941 from Washington at the gate
08:24CM 2440 to Fresno leaves the gatealso AC 4348, UA 4679
18 h 17 apart on the timetable, overnight
CM 2440 leaves 18 h 17 after UA 3941 arrives on the timetable: more than half a day, so not a connection we count.