Mech designers communicated best when they practiced their profession.
Although it was kind of weird for a cat and a human Master to talk about mech designs, the two were immediately able to get into sync with each other.
Part of it was because they already collaborated with each other in the past. Another part of it was that both of them had confirmed that their goals were at least partially aligned.
As mech designers who still stayed true to the original principles and values of their profession, there was no obvious discrepancy between the two. Their perspectives and knowledge base may differ substantially, but the beauty of designing mechs together was that their contributions were often additive.
Since Veronica was the lead designer of this new Carmine mech design project, she naturally took the lead by specifying the starting parameters of her proposal.