UA 733 then B6 278 at San Francisco
Arcata → San Francisco → Fort Lauderdale
Timetable, San Francisco time
07:18UA 733 from Arcata at the gate
23:25B6 278 to Fort Lauderdale leaves the gatealso AD 7694
16 h 07 apart on the timetable
B6 278 leaves 16 h 07 after UA 733 arrives on the timetable: more than half a day, so not a connection we count.