In this paper, four colleagues working in teacher education reflect on a conversation. The conversation in question was a tangible discussion documented through frequent and purposeful email exchange, exploring traditionalist school art curricula through reference to lived experience, academic theory, and professional anecdote. The primary objective of this dialogic self-enquiry was informal critical analysis of the cultural diversity and positioning of art objects that populate classroom curricula in English schools, starting with the ‘African mask’. The secondary objective of our conversation was exploration of how complex talk on culture and curriculum might be modelled for schoolteachers yet to initiate similar conversations in their own professional contexts. We each provide reflections on the success of our conversation against these objectives and find that while email exchange provided some formal advantages for the structure of our discourse, this was not as we might have expected. The dialogue facilitated a rhizomatic deepening of our individual questioning of culturality in the classroom, which while nourishing was arguably unproductive in instrumental terms. Collectively, our reflections suggest that dialogue may be a critical catalyst for the latter, inherently private work of decolonising one's own critical teaching praxis.