I have in various places (both Catholic and Protestant sources) seen Luke, Barnabas and Apollos referred to as Apostles. And many times, the word Disciples is used to differentiate these from the original twelve called by the Lord.
In any event, the point I was trying to make is that neither Paul nor Luke ever "knew" Jesus during His lifetime.
Which means exactly "zero."
God did not quicken a man named Saul 400 years later to preach the Gospel of Christianity.
Christianity spread like a ripple from a stone thrown into a pond -- outward from the source.
Not 400 years later.
I'll grant you that there is no Scriptural support of either having met Jesus during his pre-Resurrection life. However, we know that Paul had more than one direct encounter with the Lord, post-Resurrection.
I think the odds are pretty good that both Paul and Luke were direct witnesses to Jesus during his ministry. Both were prominent men, and lived in the area. Given the stir Jesus created, they were likely exposed to Him. Although, I AM simply speculating.
"In any event, the point I was trying to make is that neither Paul nor Luke ever "knew" Jesus during His lifetime."
You don't know that. Paul was a student at the school of Gamaliel in Jerusalem during the time of Jesus ministry and could very well have heard Him teach. He was present, along with other members of the Sanhedren, at the stoning of Stephen soon after the ascension. He met Jesus in person on the road to Damascus and knew enough about Jesus to recognize Him as Lord and the claims He had on Paul's life. He was taken in the spirit up into heaven and was an eyewitness to the glory that awaits believers. His tesimony is not hearsay for he does not build on another's foundation as does Peter.