A: Our call would be that you could win if you have both, since both are mentioned on the same Goal, and the rule regarding winning with Creepers is that it’s possible if the Goal specifically requires that Creeper. Another way to think of it is that it’s not an exclusive “or” (XOR). You can win if you have the Poet and one or both of the Creepers listed.
This is true for any Goal which requires any subset of a group of Creepers. If the Creeper is shown on the Goal, it will not prevent the win, but if the person in question has any Creepers NOT shown on the Goal they’re trying to win with, then those excess unrelated Creepers will prevent the win.