RSS in Dolphin

Am I right in saying that if a Group is Private there is NO access to any ares of the Group at all? For example a non member of a Group, I'm hoping cannot see Forum Topics & get a message saying 'you are not a member' or whatever if he/she tries to access the post. I'm thinking they won't see the Forum page at all right? Just concerned that RSS feeds may still be accessible. Personally I would like to disable ALL RSS as I've never liked it on any platform I've used & don't see why it's such a big thing.

When smb creates a group, it is possible to choose who can use forum - this is applicable to both viewing and posting group's forum.

However RSS feed still will be public, if link to the feed somehow disclosed.