Note that my "historical manifestation" refers first to the visible NT church, that being where those in the one true church (as it alone only consists 100% of true believers) expressed their faith, along with a number ot tares.
Secondly, historical manifestation refers to later visible churches which basically preached the gospel of the NT church which Peter (Acts 10:36-43) and Paul (Rm. 3:10-51) preached, with baptism confessing that faith, it being a living faith which characteristically follows its Object
And is not seen praying to created beings, or "priests" offering the Eucharist as a sacrifice for sins, and that event being the source and summit and center of church life around which all revolved, and looking to Peter as the first of a line of infallible popes in Rome, etc .
As the post-apostolic church suffered its progressive deformation, the body of Christ continued as a remnant of believers, per usual, within the visible organizational institution, whose deformation and corruption finally necessitated the incomplete Reformation. In which remnant type believers, along with the inevitable tares, were able to once again express their faith in organized organic bodies, even though the visible church is yet imperfect.
Glory of God.
The seven churches of Asia were bona fide churches of the one holy catholic apostolic church. The Messiah wrote letters to them (their angels) through his servant John by the Spirit of God. He both commended and criticized them, warning them repeatedly to do the works. I don't see him writing letters to tares, but rather to those in danger of losing their salvation. He threatened to remove those churches' candlesticks if they did not repent and do the works.
There are no letters to the Reformation, Chuck Smith, Aimee Semple McPherson, or any other Protestant denomination, sect, branch, or faith community.
I see a 1500 year gap with disparate streams of denominations, sects, movements, and communities with no apostolic succession or divine authority. Some of these also allow, and follow, female founders and pastors.