In many TV shows different directors are used to direct different episodes and different screenwriters are used to write different episodes. This is even common in one single season (e.g. GoT and True Detective). In Game of Thrones there are multiple directors as well as multiple screenwriters who are used more frequently than True Detective. Even though most of the episodes are written by DB Weiss and David Benioff, there are multiple writers for GoT.
How do different screenwriters maintain consistency in writing style with each other for different episodes in a single season?