AF 8974 then UA 581 at San Francisco
Salt Lake City → San Francisco → Cleveland
Timetable, San Francisco time
16:07AF 8974 from Salt Lake City at the gate
12:45UA 581 to Cleveland leaves the gate
20 h 38 apart on the timetable, overnight
UA 581 leaves 20 h 38 after AF 8974 arrives on the timetable: more than half a day, so not a connection we count.