Hello xagorvangard,
no, this is not possible at the moment. The purpose of the “forum only visible to logged in users”-option is to hide the content from users without user-account because maybe there are some sensitive topics which should not be viewable to the public (even the title).
So I think it should be the best to decide if the content should be visible for guests too or only for logged-in users. If I provide an option for this I have to provide the same options for “moderators only”/”usergroups only”/and other forums as well which would be an overload on configuration-functionality for a plugin which I want to keep as simple as possible.
Got it. Thanks for the explanation. Make sense. Regards.