The Onion address leaks by Brave have me digging into the browser: brave://flags/#dns-over-https
That should give you setting that should be toggle-able - if your OS is compatible. Mine is not. Therefore Brave never could send DOH - encrypted DNS - behind my back as assumed default they are doing.
Which means everyone on compatible platform isn't using DNS server they might think. And it means, Brave has been functioning as Man-In-The-Middle for all your DNS lookups.
Did you install Brave for that feature - DOH? I doubt it.
The other settings in there under experimental are so many. Tons that are privacy concerns.