The article is based on a case study. The collection of empirical material took place within a Development project. The focus is on the emerging insights of a group of Finnish-Swedish didacticians and practitioners collaborating on subject integration. The empirical material consists of text documents, audio and video recordings from collaborative meetings between the project participants. The article highlights conducive conditions to consider when implementing interdisciplinary teaching. The article illuminates insights that can act as catalysts for changes in practice for both didacticians and practitioners.