I have a question concerning refinement meetings and estimates in Scaled Scrum with Nexus.
The Nexus guide mentions many levels of refinement and give some details for a so called
"cross team refinement" (decompose items to identify team, what sequence, identify dependencies).
Estimates are not mentioned there.
In "single-team scrum" I use the refinement meeting also for estimates as mentioned in the Scrum guide.
How to do in Nexus?
Following approaches spring to my mind: