You have a similar problem with Acts ,Debator, most scholars Roloff, Schille , Schneider and Weiser etc. date its writing to between 90 and 100 C.E, some like Koester, for sound reasons would date it later.
So the account in Chapter One of replacing the traitor Judas, and Peter's quote from Psalms concerning him, would be unknown to Paul.
I do not think that Paul was consciously creating Church hierarchy , with bishops of particular places having primacy over others, I think he wanted Elders to lead people to Christ, and those people then follow only Christ, but it soon became the proto- catholic church which later spawned all the power struggles and schisms we have seen down to our day, Paul created a monster, if unknowingly.