Paul's Familiarity With The Other Resurrection Witnesses

Last year, I wrote about the significance of the details mentioned in 1 Corinthians 15:6 regarding the appearance to more than five hundred. Something else worth noting is that Paul's comments elsewhere corroborate the idea that he was closely following the lives of the other resurrection witnesses. Think of his comments in Galatians 1-2 about visiting other apostles, spending a lot of time with them, and coordinating his efforts with theirs. Or his discussion of the sufferings of the apostles in 1 Corinthians 4:9-13. Or his discussion of the practices of the apostles when traveling in 1 Corinthians 9:5. Or his reference to how they were all proclaiming the same message, a comment he makes shortly after 1 Corinthians 15:6, in verse 11.