Who defines Nexus Sprint Goal?
I understand the following from The Nexus Guide..
- It is the sum of all the work and Sprint Goals of the Scrum Teams within the Nexus.
- The Product Owner discusses the Nexus Sprint Goal during Nexus Sprint Planning.
So does this mean, a PO defines it? But isn't PO responsible for Product Goal only?
Or is it defined by NIT?
Or the representatives from the Scrum teams who come together at the start of Nexus Sprint Planning to create Nexus Sprint Backlog?