'In the discipline of creative writing in Australia, questions of disciplinary identity have previously focused on distinguishing creative writing from literary studies. Fewer have questioned exactly what academics mean when they talk about ‘writing’ as a discipline. When the term ‘writing’ is used synecdochally to mean ‘creative writing’ or ‘writing in a general sense’, other kinds of writing risk becoming invisible or undervalued. This often results in writing programs targeted at fiction and creative nonfiction writers aspiring to publication. While there is nothing inherently wrong with this, our collaboration, which we label ‘horizontal mentoring’, across sub-disciplines in writing – creative writing and technical communication – has resulted in fruitful investigations into disciplinary identity. We draw on a reflective practice methodology to answer the questions: how has our collaboration helped us develop a more nuanced understanding of writing? How might this collaboration help advocate for writing in the Australian context? How can our collaboration help develop diverse students as writers? We conclude with a vision for an inclusive and welcoming disciplinary identity and pedagogical practices that engage diverse student cohorts.' (Publication abstract)