UA 755 then UA 2374 at San Francisco
Reno → San Francisco → Phoenix
Timetable, San Francisco time
09:28UA 755 from Reno at the gatealso AC 4415, NH 7379
07:05UA 2374 to Phoenix leaves the gatealso AC 5296, NZ 9372
21 h 37 apart on the timetable, overnight
UA 2374 leaves 21 h 37 after UA 755 arrives on the timetable: more than half a day, so not a connection we count.