Relation to permissions policy

[martinthomson]

The specification lists Permissions Policy as a normative dependency, but never references it. At a minimum, that's an editorial problem.

More substantively, I don't understand how the relationship between the two is supposed to be conceptualized. Is it only limited to those cases where there are transient activations involved? What if the top-level site delegates a capability that is not otherwise transient; does it become transient as a consequent of the delegation?

[martinthomson]

I see #9 is still active and does a better job of addressing this question.