Is it possible to Insert a direct link into another CMS Post?

Good afternoon,

This might be a dumb question but, is it possible to add/insert another post into a new post? I find this very difficult to explain for some reason, but essentially this is what I want:

I just can’t make it work, I tried to paste the link directly, and insert an html code and no result!

Help would be gladly appreciate it, as I can’t find any information about this!

Here is my public share link: LINK
(how to access public share link)

If you are talking about inserting this inside of a rich text field which is bound to a collection field then your option would be to use a <> custom code insert to place HTML you created that links to another collection item (slug). If you wanted to automate it you might be able to generate an embed using Embedly and use that as the source for the <> code.