According to the first John Wick, John was able to get out of the assassin's world by doing one final job, which was a final job ordered by Viggo, upon which Viggo's organized crime empire was built. But how does Santino's marker fit into the picture?
It seems as though John gave the marker to Santino to exit the assassin's world, which I thought he did by doing Viggo's final job.
So how did John leave his assassin's life? By giving Santino the marker? Or by doing that final job for Viggo?