TP 4399 then SQ 1542 at San Francisco
Boston → San Francisco → Fort Lauderdale
Timetable, San Francisco time
00:25TP 4399 from Boston at the gate
23:25SQ 1542 to Fort Lauderdale leaves the gatealso AD 7729
23 h apart on the timetable
SQ 1542 leaves 23 h after TP 4399 arrives on the timetable: more than half a day, so not a connection we count.