Many websites offer both standard domains that you can access through any browser and onion addresses only accessible via Tor.

I wonder what is the privacy advantage (if any) for the end user when connecting to a website using an onion address over using a regular address with Tor.

For example, is it any better (using Tor Browser in both cases) to connect to `https://duckduckgogg42xjoc72x3sjasowoarfbgcmvfimaftt6twagswzczad.onion` instead of `https://duckduckgo.com`.