OS 7883 then TP 4392 at San Francisco
Washington → San Francisco → Boston
Timetable, San Francisco time
19:24OS 7883 from Washington at the gate
10:44TP 4392 to Boston leaves the gate
15 h 20 apart on the timetable, overnight
TP 4392 leaves 15 h 20 after OS 7883 arrives on the timetable: more than half a day, so not a connection we count.