Unlisted Topics via wp-discourse: Keep them unlisted even after replies. How?

Support
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I’m using the wp-discourse plugin as the comments system for WordPress posts on my blog. I’d like each linked discussion topic to be published to Discourse as unlisted and remain unlisted even after replies.

My question is:
If a topic is published as unlisted, how can I keep it unlisted even after users start replying to it?

I’d like these topics to stay hidden from the main topic lists, regardless of how active the replies become — keeping them accessible only via direct links from the blog.

Is that possible with wp-discourse or via Discourse settings/hooks?

Not looking to excludes from latest topics. Looking to keep blog comments pages unlisted and only accessible via direct URL or via the wp-discouse comments link from the blog.

EDIT

Here’s what I did, in the blog articles category selected all and bulk unlist:

This image displays a dropdown menu in a software interface, showing options such as “Update Notifications,” “Reset Bump Dates,” “Close,” and “Archive,” with selections indicated by blue checkmarks and several items visible. (Captioned by AI)
This image displays a dropdown menu in a software interface, showing options such as “Update Notifications,” “Reset Bump Dates,” “Close,” and “Archive,” with selections indicated by blue checkmarks and several items visible. (Captioned by AI)375×289 20.6 KB

Then made sure this was unchecked:
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Made sure this was checked but see note:
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So disabled it here:

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