UA 3852 then TP 8491 at San Francisco
Seoul → San Francisco → Newark
Timetable, San Francisco time
08:46UA 3852 from Seoul at the gate
08:15TP 8491 to Newark leaves the gate
23 h 29 apart on the timetable, overnight
TP 8491 leaves 23 h 29 after UA 3852 arrives on the timetable: more than half a day, so not a connection we count.