UA 2177 then TP 4392 at San Francisco
Austin → San Francisco → Boston
Timetable, San Francisco time
09:03UA 2177 from Austin at the gatealso AC 5483, VA 8473, NZ 9136
22:10TP 4392 to Boston leaves the gate
13 h 07 apart on the timetable
TP 4392 leaves 13 h 07 after UA 2177 arrives on the timetable: more than half a day, so not a connection we count.