This is perhaps slightly related to this question, and specifically this answer which points out that "the worship of angels [is] false doctrine ... praying to angels arguably may not be worship, [but] in my mind the line is far too fine."
So we have, perhaps, a caution to pray/speak to angels. But can angels, under normal circumstances, speak to us? I am excluding, for the sake of this question, situations in which angels are physically manifest, and speak to us verbally.
What evidence exists in the Bible that angels either can or cannot speak to us this way?
And if the abilities/rules governing God-fearing angels is distinct from fallen angels/demons, what are the differences?