I would say since it is a prophecy, when it is says it is past that is just what it means in the context of the prophecy which is why 'all" the trumpet judgments will be fulfilled by the middle of the week as the third woe leaves satan w/ 42 months to do his thing. The theology that believes the 6th seal = the 6th trump = the 6th vial, etc. is just plain wrong.
What I think is probably likely. The 6th seal=the 7th trumpet=the last 7 vials of wrath. The 5th seal=the 42 month reign of the beast. Therefore, the 42 month reign can't be after the 6th seal, which then means neither can trumpet 1 followed by trumpet 2, etc, be after the 6th seal. IOW, all 7 trumpets involve the time of the 6 seals.
There is no such thing as the 42 month reign of the beast beginning during the 7th trumpet. Compare with Matthew 24, for example.
A) Matthew 24:15 When ye therefore shall see the abomination of desolation, spoken of Daniel the prophet, stand in the holy place, (whoso readeth, let him understand:)
16 Then let them which be in Judaea flee into the mountains:
17 Let him which is on the housetop not come down to take any thing out of his house:
18 Neither let him which is in the field return back to take his clothes.
19 And woe unto them that are with child, and to them that give suck in those days!
20 But pray ye that your flight be not in the winter, neither on the sabbath day:
21 For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
22 And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.
23 Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.
24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
25 Behold, I have told you before.
26 Wherefore if they shall say unto you, Behold, he is in the desert; go not forth: behold, he is in the secret chambers; believe it not.
(Parenthetical) 27 For as the lightning cometh out of the east, and shineth even unto the west; so shall also the coming of the Son of man be.
28 For wheresoever the carcase is, there will the eagles be gathered together.
B) 29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
C) 30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
31 And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.
Great tribulation, IOW, the 42 month reign of the beast, thus the time of the little season per the 5th seal, fits all of A).
The beginning of the day of the Lord, thus the 6th seal, fits B)
The 2nd coming and the rapture that follows after great tribulation, thus a Pretrib rapture is a lie, fits all of C).
Obviously then, the book of Revelation is not chronological throughout.
If the 5th seal is the 42-month reign, the trumpets must occur during the time of the seals, not after the 6th seal. Chronology matters. After all, undeniably, the 5th seal is involving the 42 month reign of the beast. And that we already know the beast reigns during the 6th trumpet and not the 7th trumpet. No way can Matthew 24:15-26 be meaning the time of the 7th trumpet