AV 6975 then AC 4154 at San Francisco
Vancouver → San Francisco → Tucson
Timetable, San Francisco time
23:01AV 6975 from Vancouver at the gate
12:10AC 4154 to Tucson leaves the gatealso UA 5736, NH 7008, NZ 9748
13 h 09 apart on the timetable, overnight
AC 4154 leaves 13 h 09 after AV 6975 arrives on the timetable: more than half a day, so not a connection we count.