An agricultural harvesting machine and a method for operating an agricultural harvesting machine. The agricultural harvesting machine includes an attachment configured to receive a crop containing grain components, at least one work assembly for processing the received crop, a transfer device, a near-infrared (NIR), and an evaluation device. The crop is received by the attachment and traverses the harvesting machine, thereby defining a crop stream. The NIR sensor is positioned along the crop stream downstream from the at least one work assembly and generates one or more signals indicative of at least one aspect of the grain components in the crop stream. Further, the evaluation device receives and analyzes the signals from the NIR sensor in order to determine a degree to which the grain components contained in the crop stream are cracked.