QR 2015 then UA 581 at San Francisco
Seattle → San Francisco → Cleveland
Timetable, San Francisco time
14:10QR 2015 from Seattle at the gate
12:45UA 581 to Cleveland leaves the gate
22 h 35 apart on the timetable, overnight
UA 581 leaves 22 h 35 after QR 2015 arrives on the timetable: more than half a day, so not a connection we count.