Please do the following:
go to https://www.sncf-connect.com/en-en/
Destination: Chantilly Gouvieux
Departure: Gare du Nord (Paris)
or a station of your choice
Map:
https://www.google.com/maps/place/Gare+de+Chantilly+Gouvieux/
Let me know on my mobile what time will you arrive.
Best times are in late morning, e.g. 10-11AM
Menu: https://hotel-parc-chantilly.com/wp-content/uploads/2021/12/Menu-A4-dec-15.pdf
go to https://www.sncf-connect.com/en-en/
Destination: Chantilly Gouvieux
Departure: Gare du Nord (Paris)
or a station of your choice
Unless you have way too much time, don't.
The road between Paris and Chantilly is very poor -- quite possibly this is by design! It takes much, much longer to come here by car than by train.