Angels

Reading the first 2 chapters of Hebrews, there is a LOT of talk about angels. About Jesus in relation to angels. About humans and in relation to angels. About heaven in relation to God. It seems a strikingly different book than the previous books attributed to Paul. I am not sure what the common consensus on who the writer of Hebrews is now but it does seem so different from the other books that if the author is Paul it must have been Paul writing after some big revelation that made everything look different!