It seems that your confusion is finally almost cleared up.
Yes, angels communicating with humans is indeed more logical than a belief in Talking Donkeys and that the earth stopped rotating.
What is un-scientific about dreams being used by God to communicate with Humans? You're confusing logic and science again - go back and re-read what I wrote. Given that you actually agree that God communicates via dreams, you're on thin ice here aren't you? Unless you're arguing that God communicating via dreams is illogical as real talking donkeys? If someone dreamed of a talking donkey -that isn't something we could dismiss.
But someone (like you) arguing a real donkey talked is asking us to believe in the illogical.