This does not make any sense. The antichrist is slaughtering everybody in the 4th seal with death by the enforcement of the mark.
The middle of the tribulation (Marked by Daniel and the Olivet discourse) is a warning of the antichrist‘s abomination of desolations in the Jewish temple (which would naturally follow with the enforcement of the mark). The 6th seal lines up with the signs of the Day of the Lord (skies going dark, etc.). The 6th seal is God’s reply to the 5th seal in the saints crying out for justice (For having just been killed by the antichrist). Refer to my end times chronology.
https://www.christianforums.com/threads/my-new-end-times-chronology.8109642/
….
The middle of the tribulation (Marked by Daniel and the Olivet discourse) is a warning of the antichrist‘s abomination of desolations in the Jewish temple (which would naturally follow with the enforcement of the mark). The 6th seal lines up with the signs of the Day of the Lord (skies going dark, etc.). The 6th seal is God’s reply to the 5th seal in the saints crying out for justice (For having just been killed by the antichrist). Refer to my end times chronology.
https://www.christianforums.com/threads/my-new-end-times-chronology.8109642/
….
Nothing to do with the Antichrist. This is the beginning of sorrow. before the 42 months where the beast has full control.