You read the epistles and acts and completely miss that there is authority in the apostolic Church. Not you.
I've read them over and over. Paul's authority came not from Peter, The Disciples, Other Apostles, nor any named church. His authority came from GOD by Divine Revelation same as Peter confessed Christ as The Son Of GOD. Paul was not under Peter's control nor did he need Peter's approval.
Did Paul establish some churches outside of Judea and Jerusalem and oversee them? Yes. So did the others so did ones who were not Disciples nor likely Apostles. When the early believers came under persecution following the death of Stephen it sent believers out in many places spreading The Gospel.
Praise be to GOD our salvation doesn't hinge on the doings nor authority of men here on earth. Praise be to GOD man was set free of the old Temple Priest Oligarchy which held it's powers over men often leading to abuses and even placing Christ on the cross. We no longer need a Priest to intercede. We have one we can go to one on one directly whom He alone will intercede for us before The Father. His name is Jesus Christ.