A threshing and separating system (130) for an agricultural vehicle (100) includes: a rotor cage (200)； a first vane rail (301) movably connected to the rotor cage (200)； a first vane portion (210A) pivotably connected to the rotor cage (200) and linked to the first vane rail (301)； a second vane rail (302) movably connected to the rotor cage (200)； and a second vane portion (210B) pivotably connected to the rotor cage (200) and linked to the second vane rail (302), the second vane portion (210B) and the first vane portion (210A) together defining a substantially continuous vane (210). The threshing and separating system (130) is characterized in that the second vane rail (302) is movable independently of the first vane rail (301).
