UA 1936 then UA 1914 at San Francisco
Eugene → San Francisco → Chicago O'Hare
Timetable, San Francisco time
21:05UA 1936 from Eugene at the gatealso OZ 6325
17:10UA 1914 to Chicago O'Hare leaves the gatealso AC 4196, NZ 9314
20 h 05 apart on the timetable, overnight
UA 1914 leaves 20 h 05 after UA 1936 arrives on the timetable: more than half a day, so not a connection we count.