Effective primary-secondary care collaboration is crucial for patient care. However, this collaboration does not come naturally and requires specific attention during education and training. This article outlines what needs to be learned, how to approach it, and provides examples. The authors highlight the need for clear communication, understanding of mutual roles and responsibilities, and the value of mutual respect and trust. The learning should ideally take place in daily patient care, with time for reflection in a safe environment. Role models in collaboration are of ultimate importance. The authors encourage the implementation of cross-disciplinary education for postgraduate medical trainees; not occasionally, but structurally. This also counts for interprofessional education between for example the medical and the nursing professions. We no longer work from silos of one professional group, but in dynamic networks. Therefore, learning and education should also be shaped collectively.