Yes aside from that. Because Paul did know Jesus through the Holy Spirit as Paul was led by the Holy Spirit. And the vast majority of people who have a relationship with the Trinity and are led by the Holy Spirit know that.You mean aside from the fact Paul never met Jesus? What Paul knew about Jesus can be summed up as:
Jesus died for our sins by crucifixion and was then raised from the dead three days later, according to prophecy. He was seen by many after the resurrection. He was a descendant of David, he was betrayed, he defined a bread and wine ritual for his followers, and the Jews killed him.