This will be great. Not sure if we are meaning the same thing. Recently, i have been using the Zettlekasten method in note taking.
The Roam Research software got this feature where any word, sentence, bullet block, can be tagged, and turned into a page/link.
Over time, these tags crossed link and form a web of knowledge.
Right now in evernote. I rely on the "Context" and Search feature to pull out possible related notes/content. I also manually create links (cross reference) to my notes. I will be very powerful if evernote have that feature, inline tagging or linking.