CM 2469 then CA 7307 at San Francisco
Arcata → San Francisco → Boston
Timetable, San Francisco time
20:00CM 2469 from Arcata at the gatealso UA 5305, NZ 9338
12:45CA 7307 to Boston leaves the gatealso NH 7330
16 h 45 apart on the timetable, overnight
CA 7307 leaves 16 h 45 after CM 2469 arrives on the timetable: more than half a day, so not a connection we count.