The invention proceeds from a product-stream-transfer apparatus (10a) for transferring at least a first product sub-stream (12a) and a further product sub-stream (14a) into a main product stream (16a) or for separating a main product stream into at least a first product sub-stream and a further product sub-stream along a product-stream-transfer route (18a), having a first side route (20a) with a multiplicity of transporting elements (22a) for transporting products (24a) of the first product sub-stream (12a), having at least a further side route (26a) with a multiplicity of transporting elements (22a) for transporting products (24a) of the further product sub-stream (14a), and having a main route (28a), which is adjacent to the product-stream-transfer route (18a) and is intended for transporting the products (24a) of the main product stream (16a). It is proposed for at least sub-quantities of the transporting elements (22a) to be driveable independently of one another at least along one of the side routes (20a; 26a) of the product-stream-transfer route (18a).