I want to know the answer to the following question:
What was the earliest divergence within the Neognathes?
All the background I'm provided with is that "The Aves are agreed to have evolved in the Cretaceous, and the split between the Galloanseri from other Neognathes occurred before the Cretaceous–Paleogene extinction event, but there are different opinions about whether the radiation of the remaining Neognathes occurred before or after the extinction of the other dinosaurs.". Is that enough to answer the question?
Answer: no