UA 2603 then VA 8413 at San Francisco
Toronto → San Francisco → Phoenix
Timetable, San Francisco time
09:29UA 2603 from Toronto at the gatealso AC 4105
07:05VA 8413 to Phoenix leaves the gate
21 h 36 apart on the timetable, overnight
VA 8413 leaves 21 h 36 after UA 2603 arrives on the timetable: more than half a day, so not a connection we count.