OZ 6344 then CX 7578 at San Francisco
St Louis → San Francisco → Dallas-Fort Worth
Timetable, San Francisco time
21:41OZ 6344 from St Louis at the gate
11:20CX 7578 to Dallas-Fort Worth leaves the gate
13 h 39 apart on the timetable, overnight
CX 7578 leaves 13 h 39 after OZ 6344 arrives on the timetable: more than half a day, so not a connection we count.