[support] Node access in Views

I'm using Node access to keep some content types restricted to certain roles. I need to show nodes from both public and roles-restricted content types in a view, but in a way so that only public nodes show up for public users, and all appear to users with special roles.

I know I can do it using 2 different views displays and restrict access to whole views, but I was wondering if it can be done in the same display, show the view to everyone but restrict the list of nodes according to Node Access.

btw what is the difference between Node Access and Content Access modules?

Thank you! Mihaela