B6 518 then UA 571 at Atlanta
Fort Lauderdale → Atlanta → San Francisco
Timetable, Atlanta time
08:02B6 518 from Fort Lauderdale at the gate
07:00UA 571 to San Francisco leaves the gate
22 h 58 apart on the timetable, overnight
UA 571 leaves 22 h 58 after B6 518 arrives on the timetable: more than half a day, so not a connection we count.