There are 2 nodes A and B.

a1 is an essay published in node A and b1 is published in B.

The author or both the essays is Michele, who is "published" in A.

Now suppose that the trust policy of B is set up so that it refuses to acknowledge relations coming from A. It means that B also refuses to acknowledge the realation "the author of b1 is Michele". This doesn not make sense from the user perspective. Does it?