Divergence is the process of thinking broadly, generating new ideas.
Convergence is the process of coming together, of prioritisation.
Both are very important.
The ideation process can lead to a tsunami of initiatives which is why Divergence must be followed by Convergence.
Convergence is a harder one, it focuses on ruthless prioritisation on the best ideas aligned with the vision for which everyone indulged in Divergence
It is important to get comfortable with both