AV 2183 then UA 648 at San Francisco
Vancouver → San Francisco → Las Vegas
Timetable, San Francisco time
15:27AV 2183 from Vancouver at the gate
12:28UA 648 to Las Vegas leaves the gatealso AC 4078, VA 8120, NZ 9228
21 h 01 apart on the timetable, overnight
UA 648 leaves 21 h 01 after AV 2183 arrives on the timetable: more than half a day, so not a connection we count.