AA 1732 then AA 1776 at Philadelphia
San Francisco → Philadelphia → Boston
Timetable, Philadelphia time
21:04AA 1732 from San Francisco at the gate
18:38AA 1776 to Boston leaves the gate
21 h 34 apart on the timetable, overnight
AA 1776 leaves 21 h 34 after AA 1732 arrives on the timetable: more than half a day, so not a connection we count.