Paul alluded to the tribulation and the removal of the church in 2 Thessalonians 2:Calypsis4,
If the 7 year tribulation period was Biblical, I would expect at least one New Testament writer to have mentioned it, but you readily admit above none did. The reason being is because it is not Biblical.
Of course, I know of Daniel's prophecy of the seventy weeks and disagree with you misapplying it to support your teaching of a 7 year pre-tribulation rapture doctrine. Lord willing I hope in the next few weeks to start a thread on Daniel's prophecy and you are more than welcomed to participate if you can put up with me (lol), but that is a whole other topic and we are getting off the subject of the OP which is the two stage theory of the return of Christ. Unless you wish to correspond further regarding the OP this will be last post to you (I know I said that in the prior post, but after I posted your post above appeared in my in box).
"6 And now ye know what withholdeth that he might be revealed in his time.
7 For the mystery of iniquity doth already work: only he who now letteth will let, until he be taken out of the way.
8 And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming:
9 Even him, whose coming is after the working of Satan with all power and signs and lying wonders,
10 And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.
11 And for this cause God shall send them strong delusion, that they should believe a lie:
12 That they all might be damned who believed not the truth, but had pleasure in unrighteousness"
This is the tribulation and we see the Holy Spirit removed from the earth in verse 7 and when He is removed so too the church is removed and then the tribulation or the time of God's wrath in the Revelation of Jesus comes when the wicked one will be revealed who is satan's man. Jesus also taught it in Matthew 24:29, after the tribulation of those days, that of course is the seven year tribulation and according Revelation 18 the sun is darkened and the moon shall not give her light.
So it is alluded too in other N.T. writtings