Act 28:23 And when they had appointed him a day, there came many to him into his lodging; to whom he expounded and testified the kingdom of God, persuading them concerning Jesus, both out of the law of Moses, and out of the prophets, from morning till evening.
Act 28:24 And some believed the things which were spoken, and some believed not.
If Peter was in Rome, Paul then was building on another man's ministry, contrary to the bible and Roman theology...
So are you saying that Peter and Paul worked against each other?
I don't think so!!