Functioning as a hub for science-policy-society interactions, the Science Service could play a crucial role in enhancing the implementation of biodiversity policies. However, existing research underscores challenges in this process, necessitating focused efforts on capacity development for key stakeholders. This report, employing a diverse methodology of expert interviews, surveys, workshops and desk research, thoroughly examines capacity needs in science-policy-society interfaces (SPSIs). The research uncovers the landscape of capacity development opportunities, which, despite their increasing number, show a shortfall in fostering impactful SPSIs. Therefore, the question arises: are these shortcomings a result of unresolved historical needs or the emergence of new, unaddressed requirements? Persistent challenges include communication gaps, policy literacy deficiencies, and constraints in resource and time availability. However, the analysis of stakeholder interviews highlights disparate capacity needs across various thematic fields, emphasizing the urgency and variations in emphasis. The discussion explores the widespread presence of stereotypes among stakeholders, pointing out the barriers these biases pose to fostering collaborative SPSIs. The report also underscores the importance of inclusion, urging stakeholders to step out of their comfort zones for more effective engagement with diverse actors.