LA 6139 then AA 2347 at San Francisco
Boston → San Francisco → Miami
Timetable, San Francisco time
00:24LA 6139 from Boston at the gate
22:59AA 2347 to Miami leaves the gatealso QF 3130
22 h 35 apart on the timetable
AA 2347 leaves 22 h 35 after LA 6139 arrives on the timetable: more than half a day, so not a connection we count.