OZ 6325 then OZ 6303 at San Francisco
Eugene → San Francisco → Chicago O'Hare
Timetable, San Francisco time
21:11OZ 6325 from Eugene at the gate
18:42OZ 6303 to Chicago O'Hare leaves the gate
21 h 31 apart on the timetable, overnight
OZ 6303 leaves 21 h 31 after OZ 6325 arrives on the timetable: more than half a day, so not a connection we count.