TP 4399 then KE 7498 at San Francisco
Boston → San Francisco → New York JFK
Timetable, San Francisco time
20:55TP 4399 from Boston at the gate
11:45KE 7498 to New York JFK leaves the gate
14 h 50 apart on the timetable, overnight
KE 7498 leaves 14 h 50 after TP 4399 arrives on the timetable: more than half a day, so not a connection we count.