OZ 6402 then LH 7785 at San Francisco
Seattle → San Francisco → Chicago O'Hare
Timetable, San Francisco time
19:38OZ 6402 from Seattle at the gate
08:20LH 7785 to Chicago O'Hare leaves the gate
12 h 42 apart on the timetable, overnight
LH 7785 leaves 12 h 42 after OZ 6402 arrives on the timetable: more than half a day, so not a connection we count.