AV 2183 then UA 2831 at San Francisco
Vancouver → San Francisco → Houston
Timetable, San Francisco time
15:27AV 2183 from Vancouver at the gate
14:30UA 2831 to Houston leaves the gate
23 h 03 apart on the timetable, overnight
UA 2831 leaves 23 h 03 after AV 2183 arrives on the timetable: more than half a day, so not a connection we count.