[MM3-users] Could Mailman3 act like a private forum?

Hello Mailman3 users and maintainers,

I'm wondering whether it would be possible for Mailman3 to act like a private forum. I know that Mailman3 has private lists and may allow for custom authenticators. However making some lists private seems to be different than making all list signups and archives public to those who are able to log in, but hidden from all users who cannot. Would Mailman3 be able to act like a forum that hides or shows lists based on whether someone is logged in?

Thanks, Andrew