Those who are of Christ are also with the Bishop (Apostle), however those who have fallen away from that unity and joined those who are accursed would share in the same judgment as them. The only time they would talk with those who fall away, is when they were willing to listen and repent. Entering into the Kingdom and Salvation was dependent on being a part of that unity. If you had any association with false preachers you would be condemned to hell.
Yahushua had chosen His apostles foreseeing the issues and mistakes they would make yet would overcome at the end. The apostles of the second century were men who were walking out the Lord’s commands and lived perfectly (spiritually mature). The other offices, presbyters and deacons, were ordained to those offices based on their righteousness. The Bishops, presbyters, and deacons were imitations of the angelic glory. The Church was patterned after the heavens.
Here is a history of how the apostles carried out the order in the church the way Christ had given the order to the Apostles and the Apostles passed it down to the next line of Apostles. The apostles foreknew that there would be a contention for the priesthood (episcopate) and had given specific instructions on how to prevent that from happening in the Church.
This is the list of many Bishops that were ordained by the Apostles. This was the beginning of the apostolic succession, the beginning of the next line of Apostles.