UA 3941 then AV 2056 at San Francisco
Washington → San Francisco → Portland (Oregon)
Timetable, San Francisco time
14:07UA 3941 from Washington at the gate
08:18AV 2056 to Portland (Oregon) leaves the gate
18 h 11 apart on the timetable, overnight
AV 2056 leaves 18 h 11 after UA 3941 arrives on the timetable: more than half a day, so not a connection we count.