Climate change represents a complex political challenge, with countries exhibiting varying degrees of success in implementing effective climate policies. The policy network approach suggests that political processes are influenced by interactions among diverse public and private actors and thus claims to offer tools to understand differences in national policymaking processes. Despite this, there is limited research exploring how specific policy network structures impact policy outcomes. This paper investigates the relationship between various configurations in collaboration and information exchange networks of policy actors and national climate policy outputs, outcomes, and impact, employing qualitative comparative analysis (QCA) and network analysis as the primary methods. It utilizes policy network survey data collected in climate policy subsystems in ten developed countries. Preliminary results show a negative association between belief segregation within information exchange networks and the overall assessment of national climate policy. These findings help to understand how network structures shape policy outputs, outcomes, and impacts, and highlight the importance of cohesive policy networks for advancing collaborative approaches to addressing climate change.