How exclude a specific folder from spotlight search but not from search window?

I'm trying to set up my Mac so that it will exclude files in a folder called 'XYZ' from the search results in spotlight only. The reason is because these files are mostly private, and I don't want them to pop up in a spotlight search.

However, I still want to be able to search them in a finder window, where I have a little more control than in spotlight. (To be clear, search normally with alt+command+space, exclude folder from command+space). Any idea how something like this could be done?