VA 8298 then UA 1248 at San Francisco
Seattle → San Francisco → Chicago O'Hare
Timetable, San Francisco time
12:59VA 8298 from Seattle at the gate
05:00UA 1248 to Chicago O'Hare leaves the gatealso AC 4374, NZ 9300
16 h 01 apart on the timetable, overnight
UA 1248 leaves 16 h 01 after VA 8298 arrives on the timetable: more than half a day, so not a connection we count.