NH 7284 then UA 1799 at San Francisco
Seattle → San Francisco → Los Angeles
Timetable, San Francisco time
23:00NH 7284 from Seattle at the gate
18:55UA 1799 to Los Angeles leaves the gatealso VA 8048, NZ 9255
19 h 55 apart on the timetable, overnight
UA 1799 leaves 19 h 55 after NH 7284 arrives on the timetable: more than half a day, so not a connection we count.