Don’t forget that you’re able to have hover previews, and you can interact with those.
Meaning, if you’ve got the OOP near the top of Ducktype, you can click that through the preview window.
No need to make it harder than necessary and I believe to link those two like you’re suggesting will at least require a plugin, or for you to exchange the link syntax with some query which produces both links as you want them.
One such query option, using dataview, would need you to write something like:
`$= dv.view("myLink", "Ducktype") `
In other words, rather convoluted, and you’ll loose out on all link related features, like backlinks, graph view, and so on. Not worth it in my opinion. You’ll gain the automatic link between note and category, but you’ll loose other vital stuff in the process.
Given a custom plugin, you could perhaps link into the link generation, and keep that functionality, and add your extra link in the process. Not sure how to do it though, and not sure of the value to the general public, so I don’t see as likely to come floating by soon. 