DL 2919 then B6 278 at San Francisco
Boston → San Francisco → Fort Lauderdale
Timetable, San Francisco time
23:31DL 2919 from Boston at the gatealso SK 3585, AF 3726, LA 6228
23:25B6 278 to Fort Lauderdale leaves the gatealso AD 7694
23 h 54 apart on the timetable, overnight
B6 278 leaves 23 h 54 after DL 2919 arrives on the timetable: more than half a day, so not a connection we count.