How can I reference the link field from a Remove Duplicate node in n8n without selector errors?

I'm working on an n8n workflow and I'm stuck with referencing data from a previous node. I have a Remove Duplicate node that processes my data:

I later use another node to compose an email that should include the link for each item produced by the Remove Duplicate node. However, when I add *.link* to reference the link field, the selector changes from green to red.

What am I doing wrong with referencing these fields?