Two problems are discussed in the—surprisingly unconnected—literatures on the multiple‐streams framework (MSF) and on knowledge utilization. In the MSF, the concept of coupling has been overlooked, namely the mechanisms of linking between the problem, policy, and politics streams. In the knowledge‐utilization literature, it is discussed whether political–strategic issues are the preserve of policy‐makers, or also considered by scientific experts. Through connecting both literatures, this article develops the concept of argumentative coupling, that is the linking of problem, policy, and politics issues through arguments. This follows the recently rising call of reading the MSF through an argumentative lens. Building on an ethnographic account of research–policy interactions, different types and three different logics of argumentative coupling are systematized: consequential, doctrinal, and political. Argumentative coupling illuminates how the ground for “final couplings” is prepared: by constructing canals between the streams, which entrepreneurs may sail when the wind is blowing.