WN 3502 then UA 581 at San Francisco
Phoenix → San Francisco → Cleveland
Timetable, San Francisco time
15:30WN 3502 from Phoenix at the gate
12:45UA 581 to Cleveland leaves the gate
21 h 15 apart on the timetable, overnight
UA 581 leaves 21 h 15 after WN 3502 arrives on the timetable: more than half a day, so not a connection we count.