UA 1936 then UA 1780 at San Francisco
Eugene → San Francisco → Ontario
Timetable, San Francisco time
21:05UA 1936 from Eugene at the gatealso OZ 6325
18:50UA 1780 to Ontario leaves the gatealso AC 4423, AC 4548
21 h 45 apart on the timetable, overnight
UA 1780 leaves 21 h 45 after UA 1936 arrives on the timetable: more than half a day, so not a connection we count.