Yes, you're right Raymond. To explain Revelation, Daniel's input would be needed. The book of Revelation is left unsealed, but Daniel's book is sealed until the time of the end (Dan. 12:4, 9; Rev. 22:10).
I agree the beasts share similar animal characteristics. But your first combination beast of Rev. 13 only reigned 42 months (Rev. 13:5). That means it would be assimilated by the image, becoming a beast in its own right, i.e., the scarlet-colored wild beast of Rev. 17. The same goes for the ten kings (earthly totality = all the kings on earth) and Daniel's beasts (remnants of those would be Iraq, Iran, Greece and Italy). These would become part of the scarlet-colored wild beast. Why? Because at Armageddon only two beasts would remain for Jesus to deal with, Beast from the earth (False prophet) and the scarlet-colored wild beast (Beast from the abyss). See Rev. 19:20; 20:10.
Nebuchadnezzar's dream image, and the different layers of metal, compares well with Dan 7. To force Russia into the mix would upset the chronological order. By the way, quite a few evangelical Christians are also doing the same. I prefer using Dan. 11:40 to explain the war in Ukraine. It's part of the pushing between the two kings, which is similar to the Society's viewpoint. The final clay and iron of the feet, which do not mix, also correspond to Daniel 11:40 and the competition between the King of the North and South.
Jeffro, here's something for you to think about. Would you say it is all due to coincidence?
The Biblical importance of a future “tribulation” or “time of distress” should not be underestimated. A multitude of passages, peppered all over Scripture, directly or indirectly refer to the “great tribulation” and connected events (cf. Is. 2:10, 19, 21; 13:10, 11; Amos 8:9, 11, 12; Hag. 2:6; Hebr. 12:26-29). In addition, nearly two thirds of the book of Joel describes tribulation parallels (Joel, chapter 1 & 2). Approximately 13% of Jesus’ Olivet discourse comprises information about the “great tribulation” (Matt. 24:15-28). Nearly a third of the book of Revelation (chapters 6-9, 11, 15, 16) deals exclusively with tribulation related developments. And as will be seen, prophetic chronology of both Daniel and Revelation points to important facets of the tribulation period (Dan. 8:11-14, 25; 12:1, 7, 11, 12; Rev. 11:2, 3).