LH 9213 then TP 4392 at San Francisco
Las Vegas → San Francisco → Boston
Timetable, San Francisco time
19:03LH 9213 from Las Vegas at the gate
10:44TP 4392 to Boston leaves the gate
15 h 41 apart on the timetable, overnight
TP 4392 leaves 15 h 41 after LH 9213 arrives on the timetable: more than half a day, so not a connection we count.