A method and a device are provided for combining overlapping flows (S1, S2) of flat products (10, 20), particularly of printed products, to common product flows (P3). The products (10, 20) from the first or second overlapping flows (S1, S2) are received by an intermediate conveyor (50), and transported to a first product flow (P1), or a second product flow (P2), by means of the intermediate conveyor (50). The distance (d) of the product flows (P1, P2) is successively reduced so that the product flows (P1, P2) form the common product flow (P3). The products (10, 20) are conveyed at least directly before combining the product flows (P1, P2) such that a space (12, 22) is located at least between the groups of products (10, 20) within the first, or within the second product flow (P1, P2). The products (10, 20) of at least one of the product flows (P1, P2) are displaced in a direction extending substantially perpendicular to the surface normal (14, 24) relative to the products (10, 20) of the other product flow (P1, P2).