Its an international ticket, cdg-sjc, layovers of 23.9 hours are permitted anywhere along the route. Call back and find an agent that is competent and it should work fine.
Hope you have the first 3 legs on hold... makes the future call (s) easier. HUCA! Just had to do it on a simple one stop partner award. If there is any confusion reiterate cdg is in france, not in the USA, but be polite.