ObjectiveOur research aim is to enrich the conceptualization of high conflict post-divorce co-parenting by understanding the dynamic process involved.BackgroundThe studied phenomena were explored by linking previous scientific knowledge to practice.MethodWe cross-referenced the previous study results with the experiences reported by eight professionals and tried to answer the following research question: how professionals’ experience and previous scientific knowledge contribute to a better understanding of HC post-divorce co-parenting? Individual face to face interviews were conducted and analyzed regarding the qualitative theoretical reasoning of thematic analysis.ResultsAnalysis allowed us to highlight how four main axes are related to HC post-divorce co-parenting: (1) Parents for life, (2) Acting in the child’s best interests, (3) Managing disagreements, and (4) Healing the separation.ConclusionOur findings capture high conflict post-divorce co-parenting as a multidimensional dynamic process. As such, dealing with co-parenting disagreements must be understood as a moment in a process that is influenced by, and influences, other dimensions.ImplicationsInterventions must consider the four dimensions and their reciprocal interactions. The essential elements underlying parents’ difficulties may reside at a multiplicity of levels: inter-relational, contextual, and intrapsychic. Each level contains key potential factors in understanding these families, and in formulating intervention guidelines.