Great question, this may have been touched on a bit during the message on the Tribulation (10/31/21) and/or may again be addressed during the message on the 1,000 year reign (11/14/21) but the short answer to the question is no. Both of these groups are separate from the Church.
The Church (Bride of Christ)
The Church includes all of those who followed Christ as Savior and Lord from Pentecost to the Rapture.
Tribulation Saints
Those who trust in Christ rather than the antichrist as their Savior during the Tribulation are called Tribulation Saints. We read about them in Revelation 7:9. They may be saved because of the message of the 2 Witnesses, or the 144,000 missionaries that come from the 12 tribes of Israel. They may be people that were churched, but never made a commitment to follow Christ before the Church was raptured away and now they know the truth of Salvation. Regardless they are going to live out their faith during unimaginable hardship and oppressive evil. The tribulation saints will be resurrected after the Tribulation has passed and before the 1,000 year reign of Christ.
Millennium Worshippers
There are still people living during the Millennium. They are those Christ followers that who survived the tribulation. So, entering into the 1,000 period of time everyone worships God! Can you pause and imagine what that would be like? Moving on through the 1,000 years, the inhabitants of the refreshed Millennial Earth have children. The children are born with a free will and although their parents are devoted to God, they may either choose to follow, or not; and so on through as many generations as can be born in 1,000 years. Those who choose not to follow will be judged at the Great White Throne Judgement along with all other enemies of God. Those who choose to worship God during this time will not die but they will be given eternal bodies, to replace their mortal bodies. They are not part of the Tribulation Saints or part of the OT Saints or part of the Bride of Christ, but they will also live eternally with God and all of the others who worship Him.