Jesus, the author and finisher of Revelation stated that the book was a timeline when he said,
Write the things which you have seen, and the things which are, and the things which shall be hereafterRev. 1:19.
So the book is introduced as a timeline (chronological) - past, present, and future.
When he wrote he book, John had seen a revelation of Jesus (Chapt. 1) - past.
When he wrote the book, John was in the "church age" (Chapt. 2-3) - present.
The "rapture", Daniel's 70th week, and Jesus' millennial reign and beyond were all "the things which shall be hereafter" (Chapt. 4-22) - future.
Chapt. 4 opens with a startling event:
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 you things which must be hereafter.Rev 4:1
Is this not the rapture where "the trump will sound and the dead shall be raised incorruptible, and we shall be changed (1 Cor. 15:52)? Notice before Rev 4:1 the church was on the earth, but after this verse the church is only seen in Heaven.
Chapt 6 begins Daniels' 70th week - exactly seven years. By careful and prayerful reading of Matt. 24:4-35, you can map and lay that portion of Matthew, which IS chronological, over Revelation Chapt. 6-19, beginning with Jesus first words in Matt,
Take heed that no man deceive you. For many shall come in my name, saying, I am Christ; and shall deceive many.Matt. 24:4-5.
Overlayed with the first thing seen in Revelation Chapt. 6,
And I saw, and behold a white horse: and he that sat on him had a bow; and a crown was given unto him: and he went forth conquering, and to conquer.Rev. 6:2
Astonishingly, almost as a fulfilment of this prophecy, many today erroneously think that the guy on the white horse ("white horse" - he's a good guy, right?) is Christ when in fact he is the deceiver Jesus warned about.
Much more, but that's a good start. I hope to write a book someday about all of this that I hope will be informative, edifying, extortive, comforting, and hopefully enjoyable as we see the day fast approaching.