How do Deep links work on macOS?

When I create external or internal links via the finder, the links lead me to my nextcloud instance in the browser to the correct location.

But I want them to open locally in the client. When I prepend “nc://”, the browser asks me to open the link locally, but the client does not do anything.

How do I construct a nc:// deep link out of my private link?
For example the private link is:

neither of these work:


Any help would be appreciated

Really locally in Nextcloud MacOS client app or only WebDAV? For WebDAV read here.