Why can there be only one Pope at a time? Because Christ set up 12 Apostles but only one Pope. St. Peter is “mentioned 191 times (162 as Peter or Simon Peter, 23 as Simon and 6 as Cephas).” That is more than all the other Apostles combined. Thus, Peter’s office (munus in Latin) is singular. The Pope is much more than “first among equals” as the New Testament clearly proves in the above numbers. On top of this, numerous Magisterial documents (and saints that stood against anti-popes in history) all insist: There can only be one valid Pope of Rome at any one time.
Yet a decade ago, the Vatican’s Archbishop Georg Gänswein erroneously believed Pope Benedict XVI could bifurcate the papacy into “an expanded ministry.”
https://padreperegrino.org/2024/10/enclosure/