Now three-time grand prix winner Herbert has told Perez that he must block out all the negativity and focus solely on performances after drawing on a similar experience when he was team-mates with Michael Schumacher at Benetton in the mid-1990s.
"In all my negotiations with Benetton, Flavio Briatore told me that Michael Schumacher and I were a team, that we worked together and everyone had access to the same information," Herbert said in quotes via MegaDice.
"It never worked that way because there tends to be favouritism towards the guy that does deliver.
"When that is there, you feel it and when you feel it that is a hard thing to be able to bat away. As much as Sergio says he ignores it, it does affect you.
"Sergio has got to put himself into a cocoon and deliver every single time with the battering that comes from the media and from within the team on occasion."
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