I want to know the answer to the following question:
How clear is the relationship between the broadest of the three non-basal angiosperm groups?
All the background I'm provided with is that "The exact relationship between these eight groups is not yet clear, although there is agreement that the first three groups to diverge from the ancestral angiosperm were Amborellales, Nymphaeales, and Austrobaileyales.". Is that enough to answer the question?
Answer: no