VA 8311 then AA 1934 at San Francisco
Boston → San Francisco → Miami
Timetable, San Francisco time
11:54VA 8311 from Boston at the gate
11:39AA 1934 to Miami leaves the gate
23 h 45 apart on the timetable, overnight
AA 1934 leaves 23 h 45 after VA 8311 arrives on the timetable: more than half a day, so not a connection we count.