Sergio Marchionne is definitely at odds with Ross Brawn, claiming Formula 1's sporting boss acts like "Moses reading the Ten Commandments".
The Ferrari president ramped up his criticism of Formula 1's current vision of the future which departs, according to Marchionne, with the sport's DNA.
The Fiat-Chryser boss took a direct swipe at Brawn's ideas and approach to F1's affairs.
"I have a good relationship with Chase Carey," he told Speed Week.
"We saw each other 10 days ago and we had a very open dialogue.
"What I do not care for is when Ross Brawn comes along and announces that grid girls have to go. And how the engines and chassis should be.
"He behaves like Moses reading the Ten Commandments. And when I call Moses' boss, he tells me that it was just his personal opinion.
"So I don't want to participate in such a discourse. I want to sit down and talk to those involved. It's not helpful to involve the media," Marchionne added.
Marchionne revealed the selling price of a current F1 power unit which he puts at €15 million, a number directly linked to the level of technology embedded in the engines, and pushed back once again the future engine rules' potential lack of differentiation.
"When I hear Ross Brawn say engines are too complicated, I ask 'What does he want for 15 million?'" said Marchionne.
"Liberty Media is right when they say we need to improve the show. I was not excited with what was offered at the last race, where virtually nothing happened for 50 laps.
"But that's not the fault of the engines.
"In an ideal world I would throw all the rules out of the window. Instead, we get suggestions that would lead to all the cars differing only in colour.
"If this is the Formula 1 of the future, then Ferrari will only need three seconds to decide about leaving," Marchionne said.