The church is the body of all believers, the bride of Christ, throughout the last 2000 or so years.
While groups of Christians form denominations and meet in buildings and call those *churches*, they are not necessarily so.
Jesus said that where ever two or three are gathered in His name, He is there in the midst. IOW, there is church.
What's your definition of *church* that seems to lead you to question his?
So far he has really affirmed that he is part of a church. He said some hazy thing about universal church. That sounds like it could be a guy that stays home and thinks that's just AOK, and then he calls that "church".
Like the 3000 in Act 5 all left for home and stayed there.
He also said they don't have "sermons".
Acts 20:20 NIV You know that I have not hesitated to preach anything that would be helpful to you but have taught you publicly and from house to house.
The content of a "preaching" is a "sermon" by definition, and it can be a proclamation of the gospel or a teaching, something "helpful",. What was Paul's sermon in Athens?.