Comprehensive and Detailed 250 to 250 words of Explanation From Exact Extract of SAFe 6.0, including the SAFe Release domains:
In SAFe 6.0, the Release Train Engineer (RTE) serves as the chief servant leader and coach for the Agile Release Train. A key collaborator who supports the RTE in enabling high-performing teams is the Scrum Master/Team Coach (SM/TC). SAFe explicitly states that RTEs work closely with Scrum Masters to facilitate ART events, improve team-level execution, remove impediments, and foster relentless improvement.
Scrum Masters and Team Coaches operate at the team level, coaching Agile teams in Scrum, Kanban, and flow practices while helping teams deliver increments of value every iteration. The RTE coordinates and aligns this work across all teams on the ART, creating a network of servant leaders that reinforces consistent practices, transparency, and flow. This collaboration is especially important during PI Planning, System Demos, and Inspect and Adapt events.
While the RTE collaborates with many roles, including System Architects and Product Management, the Scrum Master/Team Coach is the primary partner in day-to-day ART execution and team enablement. Release Management is not a defined SAFe role, and Product Owners focus on team backlog prioritization rather than ART-level facilitation.
Therefore, the Scrum Master/Team Coach is a key collaborator who directly supports the RTE in enabling ART effectiveness within the SAFe Release domain.