UA 2603 then OZ 9523 at San Francisco
Toronto → San Francisco → Newark
Timetable, San Francisco time
09:29UA 2603 from Toronto at the gatealso AC 4105
21:30OZ 9523 to Newark leaves the gate
12 h 01 apart on the timetable
OZ 9523 leaves 12 h 01 after UA 2603 arrives on the timetable: more than half a day, so not a connection we count.