Sorry the Catholics got refuted.
Believed, can, could, might, should, may - ain't working for the Protestants.
Apostolic succession can't be broken if it was never created. It's more than broken. Downright lies created by Common men.
...There is no 'proof' that Peter was the 'first Pope....
https://www.quora.com/Is-there-proof-that-Peter-was-the-first-Pope?share=1
What it does not show is that Linus was to be the leader of those in Rome or ordained by Peter.... The lack of emphasis/preeminence in Paul's writings would seem to suggest that Linus could not have been the one to become the "bishop of Rome" and the successor of Peter and Paul in 67 A.D.... There is simply no direct, nor indirect, reference to Linus in any of the writings of the so-called Apostolic Fathers. Linus, according to his complete omission from the writings of the "Apostolic Fathers" (circa 100-160 A.D.) simply did not have a major leadership role in the Church....
http://www.cogwriter.com/linus.htm
...
* At least 4 Popes are admitted to have had illegitimate children.
* At least 5 Popes were sons of priests, including at least one (maybe two) Popes who were sons of other Popes! (Some of these priests may have been married but left their families to become priests.)
* At least 6 Popes were excommunicated or condemned as heretics, including one Pope who was excommunicated twice and two Popes who excommunicated one another!...
... There is no passage, here or elsewhere, which calls Peter the Chief Shepherd or which states He has authority over the other apostles.... ... Peter Had No Authority above Other Apostles.... There Is No Valid Scriptural Proof that Peter Ever Acted as Pope.... No Men Today Can Be Successors of Apostles.... Successors to Apostles Are Not Needed Today.... The True Church Cannot Be Identified by Tracing
a Succession of Bishops....
http://gospelway.com/religiousgroups/peter_as_pope.php
...If Peter was the first pope then:
Why was Paul was equal to Peter: "Actually I should have been commended by you, for in no respect was I inferior to the most eminent apostles, even though I am a nobody." 2 Corinthians 12:11
Why was Peter was not an infallible guide in faith and morals: "But when Peter came to Antioch, Paul opposed him to his face, because he stood condemned." Galatians 2:11
... Peter was not a Pope!... Proof texts of Peter being the first Pope REFUTED!...
http://www.bible.ca/catholic-infallibility.htm
... In other words.. you should not have a Pope... At the times the Catholics believe Peter was in Rome, The Bible clearly shows he was elsewhere...
http://www.remnantofgod.org/pope1.htm
... Peter Was Not The First Pope! Conclusive Historical Evidence Revealed and Matthew 16:18-19 Contextual Evidence...
http://watchmanforjesus.blogspot.com/2010/11/peter-was-not-first-pope-conclusive.html?m=1
... Also, nowhere does Scripture state that, in order to keep the church from error, the authority of the apostles was passed on to those they ordained (the idea behind apostolic succession).... Was Peter the first pope? The answer, according to Scripture, is a clear and emphatic “no.” Peter nowhere claims supremacy over the other apostles. Nowhere in his writings (1 and 2 Peter) did the Apostle Peter claim any special role, authority, or power over the church. Nowhere in Scripture does Peter, or any other apostle, state that their apostolic authority would be passed on to successors. Yes, the Apostle Peter had a leadership role among the disciples. Yes, Peter played a crucial role in the early spread of the gospel (Acts chapters 1-10). Yes, Peter was the “rock” that Christ predicted he would be (Matthew 16:18). However, these truths about Peter in no way give support to the concept that Peter was the first pope, or that he was the “supreme leader” over the apostles, or that his authority would be passed on to the bishops of Rome. Peter himself points us all to the true Shepherd and Overseer of the church, the Lord Jesus Christ (1 Peter 2:25)....
http://www.gotquestions.org/Peter-first-pope.html