FI 7899 then AA 1732 at San Francisco
Boston → San Francisco → Philadelphia
Timetable, San Francisco time
09:50FI 7899 from Boston at the gate
09:46AA 1732 to Philadelphia leaves the gatealso BA 5616
23 h 56 apart on the timetable, overnight
AA 1732 leaves 23 h 56 after FI 7899 arrives on the timetable: more than half a day, so not a connection we count.