they both seem to just be the same link to the comment, and both have the tooltip “link”
You must log in or register to comment.
The left links to the post/comment on your current instance. The right links to the post/comment on the instance it was sent from. You’ll see that on this comments the links do differ.
Adding to this - when you want to fetch content into your instance, you should search for the url that you get when you click the right button.