Locking RGB Record in Negative Color Film and using it

I find RGB or RRGGBB color separations of Autochrome fascinating.

All We can do for achieving that , using color filters and multi negatives , scans and digital process where scanner colors and files changes colors of the original.

I learned that color negative film separates everything with RGB layers.

How can We protect these RGB layers and records with development to free from 3 negative process ?

Umut