It is maybe a stretch, but the two witnesses in Revelation 11 maybe witness pairs in TWOs in persons, places, or things spoken around and about or missing till found.
It just might some day come to going like this:
As for hints, wait till you get to the fourth hint at the bottom.
First hint to it?
Revelation ended with chapter 22. In a lucky day in a casino you'd hit a number looking like 222 (which are, if turned around, 777). Not an extra 2 chapters to Revelation, but an extra 2 Revelation books to team up with the first Revelation book.
Second hint to it?
Revelation 13. How so? Two beast drawing much focus are what? Within it. Simple. That can be a really sick code for a 123 to be understood for there being in total a 1 Rev, a 2 Rev, and a 3 Rev.
Third hint to it?
Revelation 11. How so? Not only is the two witnesses mentioned within, but the chapter number makes a 1 + 1 that = 2. Hinting 2 more books.
Fourth, and MAIN, hint to it? A simple quote:
Revelation 9:12 One woe is past; and, behold, there come two woes more hereafter.
The reader first ASSUMES that the woes have to do with what in context is surrounding, but the woes HAVE NO NEED in that wise, which means the woes are something slickly put into place, and for the watchful reader such as myself to figure out. Come on, do you honestly think those woes being mentioned would break what surrounding things were being said, if they had not even been mentioned? The answer is obviously a no. So, I tell you this much, it pays to be watchful.
What do you think about this fourth hint, where each Revelation book had been put with an affective woe reference to it from right within the very first, came as only known?