UA 488 then UA 8100 at San Francisco
Burbank → San Francisco → Vancouver
Timetable, San Francisco time
09:09UA 488 from Burbank at the gatealso AC 4195
06:30UA 8100 to Vancouver leaves the gate
21 h 21 apart on the timetable, overnight
UA 8100 leaves 21 h 21 after UA 488 arrives on the timetable: more than half a day, so not a connection we count.