In Belgium, 82% of the population consumes alcohol occasionally while 10% consume in a way that can be seen as problematic. On a European level, only 8% of the people who can be characterized as having Alcohol Use Disorder (AUD) would have consulted professional assistance in the past year. In this context, the KCE (Belgian Health Care Knowledge Centre) has addressed multiple recommendations to health professionals to reduce the “treatment gap” concerning the patients’ care: in fist place, the encourage screening and preventative interventions, second promote the acquirement of communicational and relational competences and third place develop collaborations between professionals. The objective of this article is to better understand their functioning.