The effective implementation of NBS is still hampered by several barriers. Among the others, this work focuses on the collaboration barriers. NBS design and implementation could be conceptualized as a collaborative decision-making process, involving various decision-makers. Nevertheless, differences in problem framings may turn the multi-actors decision-making into a controversial and often futile process, leading to barriers hampering the NBS design and implementation. Contrarily to most of the works on conflict management, mainly based on the reduction of the divergent viewpoints, this work assumes that ambiguity is ineradicable in complex decision-making processes. Therefore, the work demonstrates that enhancing the effectiveness of the networks of interaction, through the implementation of networking interventions, can contribute to reducing the level of conflicts and, thus, enabling the NBS implementation. An integrated SNA-FCM method was developed to this aim and implemented in the Medina del Campo case study, one of the demo-sites in the NAIAD project.