AC 3338 then UA 2837 at San Francisco
Portland (Oregon) → San Francisco → Washington
Timetable, San Francisco time
10:55AC 3338 from Portland (Oregon) at the gate
23:20UA 2837 to Washington leaves the gate
12 h 25 apart on the timetable
UA 2837 leaves 12 h 25 after AC 3338 arrives on the timetable: more than half a day, so not a connection we count.