UA 1936 then SQ 33 at San Francisco
Eugene → San Francisco → Singapore
Timetable, San Francisco time
21:05UA 1936 from Eugene at the gatealso OZ 6325
20:15SQ 33 to Singapore leaves the gate
23 h 10 apart on the timetable, overnight
SQ 33 leaves 23 h 10 after UA 1936 arrives on the timetable: more than half a day, so not a connection we count.