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For me, the 2 banners are related to Wolfram Alpha. Possibly generated from the backend directly, so there's no ad network involved, which can be blocked.

There are some pretty aggressive rules in some blocklists. I had to disable one to read about an Aggregated Discovery Service because it just looks for /ads/ in the URL and decides to block it.

They are content serve directly by Wolfram Alpha.

You can kill it by blocking 1st party scripts, but you probably dont want to do that as it will kill the site as well.

Best bet if you really hate it would be to add a filter. But as they are "dogfood" ads those are some of the few I find acceptable.