UA 2278 then UA 387 at San Francisco
San Diego → San Francisco → Portland (Oregon)
Timetable, San Francisco time
21:25UA 2278 from San Diego at the gatealso AC 4236, OZ 6308, VA 8439
20:54UA 387 to Portland (Oregon) leaves the gatealso CM 2404, VA 8571, NZ 9348
23 h 29 apart on the timetable, overnight
UA 387 leaves 23 h 29 after UA 2278 arrives on the timetable: more than half a day, so not a connection we count.