I've been gone from Nielsen and the industry quite a few years but I still keep tabs. This is a pretty big (expensive) hire by Nielsen. Peter's job will be to take any heat from the industry that comes Karthik's way. Looks like they hired him to basically be a glorified PR guy with the client base. He has a long history and successful track record in ad sales. Whenever Nielsen has hired these big industry g-ns in the past, they fizzle out really quick and take off into the sunset with a big bag of money.
https://variety.com/2025/tv/news/peter-naylor-joins-nielsen-chief-client-officer-1236574923/