In truth, this has nothing to do with the first half of the week versus the second half. They are different Beasts: one is the Dragon who is Satan, and the other is Satan's henchman for the last half of the week.
lamad, you have left one critical person out. It is not two persons, but three involved, in Revelation 12, 13, 17.
Revelation 17
person 1. Satan, who is seen in the vision.
person 2. the beast, the ancient person
in the bottomless pit as a disembodied spirit, Revelation 17:8a
person 3. the beast, the end times person, who the world will witness killed and come back to life, Revelation 17:8b
Revelation 12
person 1. Satan, who is seen in the vision.
person 2. the beast, the ancient person, the disembodied spirit,
still in the bottomless pit.
person 3. the end times person, come to power as king 7, before the 7 years
Revelation 13
person 1. Satan, worshiped, restricted to earth. (incarnates the image of the beast)
person 2. the beast, the ancient person, as a spirit
has come out of the bottomless pit to possess the end times person.
person 3. the end times person, having been killed, come back to life, as king 8.
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Satan is the power behind the ancient person, and the end times person. And will have cut deals with both.
The ancient person - the beast in the garden, who Satan used, to cause the downfall of man. Which it appears a deal was made, that Satan would make that beast the ruler of the world.
The end times person - that person will make a deal with Satan, to achieve God-hood.
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So there are three persons involved.
In Revelation 17, the ancient person is the bottomless pit. Only Satan, the power behind that ancient person, can be seen in Revelation 17.
In Revelation 12, with 7 years in that chapter, the ancient person is still in the bottomless pit. So Satan is seen in the vision.
In Revelation 13, with 42 months left, the ancient person (a spirit) has come out of the bottomless pit to possess the end times person. The vision in Revelation 13 is the end times person, and the beast that has come out of the bottomless pit.
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The visions in Revelation 12, 13, 17, crowns/no crowns, are all different because of where the ancient person is in those chapters.
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Revelation 17 - in the bottomless pit, 1st century, time of John
Revelation 12 - in the bottomless pit - 7years left
Revelation 13 - out of the bottomless pit - 42 months left.