HCC, Human-Computer Confluence, is an ambitious research program studying how the emerging symbiotic relation between humans and computing devices can enable radically new forms of sensing, perception, interaction, and understanding. The horizontal character of HCC makes it a fascinating and fertile interdisciplinary field, but it can also compromise its growth, with researchers scattered across disciplines and groups worldwide. A coordination activity promoting discipline connect, identity building and integration while defining future research, education and policy directions is needed at the regional, national, European and international level. The goals of HC2 are: 1) to stimulate, structure and support the research community, promoting identity building, 2) to consolidate research agendas with special attention to the interdisciplinary aspects of HCC, producing useful visions and roadmaps to support future research 3) enhance the Public Understanding of HCC and foster the early contact of researchers with high-tech SMEs and other industry players 4) establish guidelines for the definition of new educational curricula to prepare the next generation of HCC researchers.