How to View Node and Thread Titles only

[GenXTiger]

I have a forum where I created a subforum that allows heated, controversial topics, but it's only accessible to a specific user group with set permissions. Registered users can see the node but nothing else. It's also hidden from search engines. I would like to take this a step further and allow registered users to see the thread titles but not the content—essentially making the thread titles non-clickable. How can I achieve this?
How to View Node and Thread Titles only

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