An agricultural vehicle, comprising: a chassis; a threshing and separating mechanism supported by the chassis and configured for threshing and separating a crop material; a cleaning system positioned downstream of the threshing and separating mechanism in a direction of crop material flow; and characterized by: an auxiliary processing system (200, 500) positioned downstream of the threshing and separating mechanism in the direction of crop material flow and configured for processing crop material exiting from the threshing and separating mechanism and for rethreshing the crop material from the cleaning system, the auxiliary processing system, having an inlet (202, 502) and an outlet (204, 504), the auxiliary processing system (200, 500) including: a discharge chopper (210, 510) having an end and a first direction of rotation R1 about an axis of rotation AR; and at least one rethreshing element (220, 520) coaxially aligned with the discharge chopper (210, 510) and adjacent to the end of the discharge chopper (210, 510) and having a second direction of rotation R2. a chassis; a threshing and separating mechanism supported by the chassis and configured for threshing and separating a crop material; a cleaning system positioned downstream of the threshing and separating mechanism in a direction of crop material flow; and characterized by: an auxiliary processing system (200, 500) positioned downstream of the threshing and separating mechanism in the direction of crop material flow and configured for processing crop material exiting from the threshing and separating mechanism and for rethreshing the crop material from the cleaning system, the auxiliary processing system, having an inlet (202, 502) and an outlet (204, 504), the auxiliary processing system (200, 500) including: a discharge chopper (210, 510) having an end and a first direction of rotation R1 about an axis of rotation AR; and at least one rethreshing element (220, 520) coaxially aligned with the discharge chopper (210, 510) and adjacent to the end of the discharge chopper (210, 510) and having a second direction of rotation R2. a cleaning system positioned downstream of the threshing and separating mechanism in a direction of crop material flow; and characterized by: an auxiliary processing system (200, 500) positioned downstream of the threshing and separating mechanism in the direction of crop material flow and configured for processing crop material exiting from the threshing and separating mechanism and for rethreshing the crop material from the cleaning system, the auxiliary processing system, having an inlet (202, 502) and an outlet (204, 504), the auxiliary processing system (200, 500) including: a discharge chopper (210, 510) having an end and a first direction of rotation R1 about an axis of rotation AR; and at least one rethreshing element (220, 520) coaxially aligned with the discharge chopper (210, 510) and adjacent to the end of the discharge chopper (210, 510) and having a second direction of rotation R2. a discharge chopper (210, 510) having an end and a first direction of rotation R1 about an axis of rotation AR; and at least one rethreshing element (220, 520) coaxially aligned with the discharge chopper (210, 510) and adjacent to the end of the discharge chopper (210, 510) and having a second direction of rotation R2.