Regarding the role of Marchionne in the engine saga, here is an interview with Binotto I already sent in this forum a couple of months ago:
https://scuderiafans.com/he-pushed-us-t ... archionne/
When asked if Marchionne pushed them to develop within grey zones, Binotto told:
I think in that respect all the teams are doing it. But then it’s what you interpret as grey or not grey. I think it’s obviously always a limit which is very borderline and difficult. But yes he certainly pushed us – not me, but us – a lot to develop the grey areas as much as we could.
The article contains some other interesting bits and shows how much of a pressure Marchionne put on the people and in this case Binotto. He needed to answer to messages from him on the mobile phone withing 30 seconds, for example. Binotto always needed to have his phone next to him, in order to reply immediately.