UA 5397 then UA 581 at San Francisco
Eugene → San Francisco → Cleveland
Timetable, San Francisco time
15:35UA 5397 from Eugene at the gatealso OZ 6325
12:45UA 581 to Cleveland leaves the gate
21 h 10 apart on the timetable, overnight
UA 581 leaves 21 h 10 after UA 5397 arrives on the timetable: more than half a day, so not a connection we count.