NZ 9172 then UA 1147 at San Francisco
Eugene → San Francisco → Chicago O'Hare
Timetable, San Francisco time
21:05NZ 9172 from Eugene at the gate
15:20UA 1147 to Chicago O'Hare leaves the gatealso AC 4185, CA 7326, VA 8104, NZ 9313
18 h 15 apart on the timetable, overnight
UA 1147 leaves 18 h 15 after NZ 9172 arrives on the timetable: more than half a day, so not a connection we count.