Paul seems to have had some spats with the apostles who were around for Jesus. The “super-apostles” of 2 Corinthians 11:5 (NIV: “do not think I am in the least inferior to those ‘super-apostles.’”) may be referring to those earlier apostles. Galatians 2:11–14 also mentions an incident where Paul openly tells Peter he’s a hypocrite.
Much like the meeting on resolving circumcision in the early church, it’s glossed over quickly and made to sound like everyone came to an agreement after hashing it out for a bit.