Intergenerationality is present within the scope of systematic and unsystematic educational spaces., especially in relations between students and teachers. However, in this article, we turn to its recognition of relations between teachers in different phases of their professional life cycle. We start by understanding the term generation to relate intergenerationality to the styles of knowledge transmission, in peaceful or conflictive coexistence, in professional identity construction of teachers. Our base is in the productions of Claudine Attias-Donfut (1988), Dumazedier (2002), Ferrigno (2010), Freire (1996), Huberman (2000), Mannheim (1982) and Ramos (2014). Recognizing it in our daily teaching practice requires deconstruction of watertight and staunch truths in order to open ourselves up to what Paulo Freire has provoked throughout his works and his life: to dialogue, take a dialogical stance with our peers at differentl and diverse times in personal and professional liveslife.