Nozzle for partitioned volute

An assembly comprising:

• an exhaust gas turbine housing comprising an inner wall and an outer wall that define a first exhaust gas channel and a second exhaust gas channel to a turbine wheel space, wherein the inner wall comprises an inner wall end at the turbine wheel space and the outer wall comprises an outer wall end at the turbine wheel space;
• a first flow body arranged adjacent to the inner wall end;
• a second flow body arranged adjacent to the outer wall end;
• and
• at least one set of adjustable variable geometry nozzle vanes that define nozzle throats that direct flow of exhaust gas from at least one of the exhaust gas channels to the turbine wheel space;
• wherein at least one of the first flow body and the second flow body comprises a concave trailing surface that is defined in part by an extension of an airfoil surface;
• wherein the first flow body comprises a leading surface, the concave trailing surface, and a first airfoil surface and a second airfoil surface that extend between the leading surface and the concave trailing surface;
• wherein one of the first airfoil surface and the second airfoil surface is formed in part by the extension;
• and
• wherein the one of the first airfoil surface and the second airfoil surface comprises a varying height, and wherein the varying height comprises a lesser height at the extension.