BA 6447 then OZ 6303 at San Francisco
Los Angeles → San Francisco → Chicago O'Hare
Timetable, San Francisco time
18:10BA 6447 from Los Angeles at the gate
17:10OZ 6303 to Chicago O'Hare leaves the gate
23 h apart on the timetable, overnight
OZ 6303 leaves 23 h after BA 6447 arrives on the timetable: more than half a day, so not a connection we count.