UA 2603 then UA 2374 at San Francisco
Toronto → San Francisco → Phoenix
Timetable, San Francisco time
09:29UA 2603 from Toronto at the gatealso AC 4105
07:05UA 2374 to Phoenix leaves the gatealso AC 5296, NZ 9372
21 h 36 apart on the timetable, overnight
UA 2374 leaves 21 h 36 after UA 2603 arrives on the timetable: more than half a day, so not a connection we count.