The contents of the "The Nexus Framework for scaling scrum" are inconsistent with the Nexus Guide.
After reading the book "The Nexus Framework for scaling scrum", some of the content was found to be different from Nexus Guide.
Although in the Scrum circle, different views are normal. But these two documents are all from scrum.org, if there is inconsistent content, a bit unreasonable.
The most notable of these include:
1. The ideal number of Scrum members, or the ideal number of Nexus teams.
The recommendations based on Scrum Guide and Nexus Guide are 3~9 (6 +- 3), but the book recommends 5~9 (7 +- 2)
2. There are also different definitions for the Nexus Sprint Backlog.
Nexus guide: A Nexus Sprint Backlog is the composite to Product Backlog items from the sprint backlogs of the individual
The Book: Only items that have dependencies.
However, I am not a native speaker of English, perhaps I misunderstood their meaning.
Any input would be appreciated.