UA 1970 then UA 2229 at San Francisco
Cleveland → San Francisco → Philadelphia
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
14:30UA 2229 to Philadelphia leaves the gatealso CA 7330, NH 7362, NZ 9362
16 h 45 apart on the timetable, overnight
UA 2229 leaves 16 h 45 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.