UA 3926 then AC 571 at San Francisco
Newark → San Francisco → Vancouver
Timetable, San Francisco time
22:56UA 3926 from Newark at the gate
16:55AC 571 to Vancouver leaves the gatealso TP 8023
17 h 59 apart on the timetable, overnight
AC 571 leaves 17 h 59 after UA 3926 arrives on the timetable: more than half a day, so not a connection we count.