Rev 1:1 The Revelation of Jesus Christ, which God gave unto him, to shew unto his servants things which must shortly come to pass; and he sent and signified it by his angel unto his servant John:You see, you are quoting from Revelation 1 and it does say that an Angel brought John the message.
But if you keep reading, Revelation 2 and 3 the Angel is telling John what to write to the churches. So those words wern't unlawful to utter...lol.
Now I've been quoting Revelation 4 so let's take one more peek there...
Revelation 4
1 After this I looked, and, behold, a door was opened in heaven: and the first voice which I heard was as it were of a trumpet talking with me; which said, Come up hither, and I will shew thee things which must be hereafter.../
It begins with "After this" ok? After what? After having a vision of an Angel telling him to write letters to some churches which is detailed in chapters 2 & 3. Ok so after that, he's changing the subject now. Nothing about an Angel here, it says a door was opened in Heaven and a voice said, come up here and I will show you things.
So it's pretty clearly not the same event. The Angel and that vision was first about writing letters, then...prolly a different day...Come up Here John!
Who knows how many times John or Paul had visions or were taken up? It might've happened weekly to them!
All I know is in Rev. 1 it says and Angel was sent to John. And in Rev. 4, it says Come up here...Hmm.
Rev 1:2 Who bare record of the word of God, and of the testimony of Jesus Christ, and of all things that he saw.
Every vision from Revelation 1-22 are all visions given to John by that of the angel Jesus sent him while he was on the isle of Patmos. Beginning with the messages to the seven churches in Asia clear up to all those things that will come to pass before Christ returns and ends with the Great White throne judgement.