Any unbiased reader would say they happen at the same time.
You are making the erroneous assumption that the Book of Revelation is in chronological order.
Since Christ returns in Revelation 16:15-16, and also in chapter 19, we know your logic is in error.
Your interpretation of the book falls apart in the scripture found below.
If your interpretation is correct, all of these passages must be wrong.
Mat 25:31 When the Son of man shall come in his glory, and all the holy angels with him, then shall he sit upon the throne of his glory:
Mat 25:32 And before him shall be gathered all nations: and he shall separate them one from another, as a shepherd divideth his sheep from the goats:
Mat 25:33 And he shall set the sheep on his right hand, but the goats on the left.
Mat 25:34 Then shall the King say unto them on his right hand, Come, ye blessed of my Father, inherit the kingdom prepared for you from the foundation of the world:
Mat 25:35 For I was an hungred, and ye gave me meat: I was thirsty, and ye gave me drink: I was a stranger, and ye took me in:
Mat 25:36 Naked, and ye clothed me: I was sick, and ye visited me: I was in prison, and ye came unto me.
Mat 25:37 Then shall the righteous answer him, saying, Lord, when saw we thee an hungred, and fed thee? or thirsty, and gave thee drink?
Mat 25:38 When saw we thee a stranger, and took thee in? or naked, and clothed thee?
Mat 25:39 Or when saw we thee sick, or in prison, and came unto thee?
Mat 25:40 And the King shall answer and say unto them, Verily I say unto you, Inasmuch as ye have done it unto one of the least of these my brethren, ye have done it unto me.
Mat 25:41 Then shall he say also unto them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels:
Mat 25:42 For I was an hungred, and ye gave me no meat: I was thirsty, and ye gave me no drink:
Mat 25:43 I was a stranger, and ye took me not in: naked, and ye clothed me not: sick, and in prison, and ye visited me not.
Mat 25:44 Then shall they also answer him, saying, Lord, when saw we thee an hungred, or athirst, or a stranger, or naked, or sick, or in prison, and did not minister unto thee?
Mat 25:45 Then shall he answer them, saying, Verily I say unto you, Inasmuch as ye did it not to one of the least of these, ye did it not to me.
Mat 25:46 And these shall go away into everlasting punishment: but the righteous into life eternal.
2Th 1:7 And to you who are troubled rest with us, when the Lord Jesus shall be revealed from heaven with his mighty angels,
2Th 1:8 In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ:
2Th 1:9 Who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of his power;
2Th 1:10 When he shall come to be glorified in his saints, and to be admired in all them that believe (because our testimony among you was believed) in that day.
2Ti 4:1 I charge thee therefore before God, and the Lord Jesus Christ, who shall judge the quick and the dead at his appearing and his kingdom;
Rev 11:15 And the seventh angel sounded; and there were great voices in heaven, saying, The kingdoms of this world are become the kingdoms of our Lord, and of his Christ; and he shall reign for ever and ever.
Rev 11:18 And the nations were angry, and thy wrath is come, and the time of the dead, that they should be judged, and that thou shouldest give reward unto thy servants the prophets, and to the saints, and them that fear thy name, small and great; and shouldest destroy them which destroy the earth.
(In the verse above we find the living "nations" and "wrath", and the "time of the judgment of the dead".)
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