UA 648 then QR 2973 at San Francisco
Newark → San Francisco → Honolulu
Timetable, San Francisco time
09:30UA 648 from Newark at the gatealso TP 8490, VA 8516, NZ 9121
07:20QR 2973 to Honolulu leaves the gate
21 h 50 apart on the timetable, overnight
QR 2973 leaves 21 h 50 after UA 648 arrives on the timetable: more than half a day, so not a connection we count.