UA 271 then AS 2486 at San Francisco
Washington → San Francisco → Los Angeles
Timetable, San Francisco time
12:25UA 271 from Washington at the gatealso NZ 9180
06:00AS 2486 to Los Angeles leaves the gate
17 h 35 apart on the timetable, overnight
AS 2486 leaves 17 h 35 after UA 271 arrives on the timetable: more than half a day, so not a connection we count.