The 42 months of Satan are not cut short. The 3.5 years leading up to Satan's 42 months are shortened.
This is the kind of interpretation that happens when you don't see Revelation as 2 parallel visions of the same events but somehow see it as Jesus is established as King, but then hands over power and authority to Satan to hand over to the beast. Which duplicates a lot of events and quickly stops making sense. Which is part of why Revelation is such a confusing book to many people because they do not divide it correctly. Revelation 10, particularly 10:7, exists as a chapter specifically to mark that the 7th trumpet is the end of that narrative. That anything else seen after John witnesses the judgement of the dead, is not a continuation, but another view.
You are going to have to define this wrath of God period or type of judgment.
Let's break this down
Revelation 6:9-11
9 And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held:
10 And they cried with a loud voice, saying, How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth?
11 And white robes were given unto every one of them; and it was said unto them, that they should rest yet for a little season, until their fellowservants also and their brethren, that should be killed as they were, should be fulfilled.
So we see here, those who are martyred during the great tribulations, this would be during those 42 months that the Antichrist reigns who has been beheading Christians after the Abomination of Desolation, complaining that God has not judged the world yet, He has not begun His wrath yet. Because for the wrath to come first the world must be judged. They are told that it will not happen, until a number of Christians that were destined to be martyred in this period were killed. Anything before the 5th seal, is not the wrath of God therefore.
Revelation 6:12-17
12 And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood;
13 And the stars of heaven fell unto the earth, even as a fig tree casteth her untimely figs, when she is shaken of a mighty wind.
14 And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.
15 And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in the dens and in the rocks of the mountains;
16 And said to the mountains and rocks, Fall on us, and hide us from the face of him that sitteth on the throne, and from the wrath of the Lamb:
17 For the great day of his wrath is come; and who shall be able to stand?
That is as clear as it gets to tell you when exactly does the wrath of God begin. After Jesus appears in the clouds, sitting on His throne, after the sun and moon go dark, as has been told all through OT prophecy as the sign that precedes the day of the Lord. Whatever happens after this point in time, is the wrath of God. Chapter 7 is kind of parenthetical but I still think it chronologically happens after the sixth seal event before the 7th, chapter 10 is parenthetical, and the two witnesses part of chapter 11 I THINK had been ongoing rather than 3.5 years of time passing between the 6th trumpet and 7th trumpet. the end part of it may be happening at the same time as the rapture, where they get resurrected and brought up to heaven. But I'm flexible on the two witnesses. It does just make more sense than 3.5 years between the 6th and 7th trumpet.
the rest of chapter 11, the 7th trumpet, the earthquake, and the announcement that the world now belongs to Jesus and there's a final judgement of the dead. Very similar to what happens in chapter 20. Just chapter 20 gives a length of time between the establishment of the kingdom and final judgement.
Second vision
Revelation 14:6-10
6 And I saw another angel fly in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people,
7 Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven, and earth, and the sea, and the fountains of waters.
8 And there followed another angel, saying, Babylon is fallen, is fallen, that great city, because she made all nations drink of the wine of the wrath of her fornication.
9 And the third angel followed them, saying with a loud voice, If any man worship the beast and his image, and receive his mark in his forehead, or in his hand,
10 The same shall drink of the wine of the wrath of God, which is poured out without mixture into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb:
First off, we see that the Lord does not judge the world until the great commission is completed, and ultimately, the church does not complete it themselves, An angel finishes the job. This has to happen before the end can come, as Jesus said in Matthew 24:14
Pretribbers seem to understand that the gospel has to be preached to everyone before the rapture can take place.
Here we see that only happens after the mark of the beast has been around
Second, we see that the world is now judged. God doesn't bring His wrath until He has judged. So the stuff that happened before, the mark of the beast, and persecution, was not the wrath of God.
Third, we see that not everyone has taken the mark of the beast, there are some who are still alive, who have not taken it, and are warned against it.
Then we come to the appearance of Jesus in the clouds
Revelation 14:14-20
14 And I looked, and behold a white cloud, and upon the cloud one sat like unto the Son of man, having on his head a golden crown, and in his hand a sharp sickle.
15 And another angel came out of the temple, crying with a loud voice to him that sat on the cloud, Thrust in thy sickle, and reap: for the time is come for thee to reap; for the harvest of the earth is ripe.
16 And he that sat on the cloud thrust in his sickle on the earth; and the earth was reaped.
17 And another angel came out of the temple which is in heaven, he also having a sharp sickle.
18 And another angel came out from the altar, which had power over fire; and cried with a loud cry to him that had the sharp sickle, saying, Thrust in thy sharp sickle, and gather the clusters of the vine of the earth; for her grapes are fully ripe.
19 And the angel thrust in his sickle into the earth, and gathered the vine of the earth, and cast it into the great winepress of the wrath of God.
20 And the winepress was trodden without the city, and blood came out of the winepress, even unto the horse bridles, by the space of a thousand and six hundred furlongs.
The wrath begins after the harvest (the rapture) that Jesus performs when He came on the clouds. Nothing before that was the wrath. The wrath happens after. Just like in the first narrative, the first 5 seals were not the wrath of God, Jesus came at the 6th seal, and that's when the wrath of God began. In the first narrative it's represented by trumpets. In the second narrative it's represented by bowls/vials.
Revelation 15:1
15 And I saw another sign in heaven, great and marvellous, seven angels having the seven last plagues; for in them is filled up the wrath of God.
Revelation 16:1
16 And I heard a great voice out of the temple saying to the seven angels, Go your ways, and pour out the vials of the wrath of God upon the earth.
Couldn't be clearer that the wrath of God is the vials, and not before, and in the first narrative it's the trumpets, and not before.