AA 9403 then TP 4392 at San Francisco
San Diego → San Francisco → Boston
Timetable, San Francisco time
08:52AA 9403 from San Diego at the gate
06:00TP 4392 to Boston leaves the gate
21 h 08 apart on the timetable, overnight
TP 4392 leaves 21 h 08 after AA 9403 arrives on the timetable: more than half a day, so not a connection we count.