I'm long gone from Nielsen but did enjoy my two decades there as I worked with some great people over the years (and some not so much...lol). The ONE THING I DON'T miss is this!!! As a client facing exec, having to get up every day and defend methodolgy and data was mind numbing...especially when you knew what you were defending was likely garbage. But hey, that's what we got paid to do. Nielsen was quite often literally a thankless job, and the stress could take years off your life. Glad I got out when I did.
https://www.thecurrent.com/tv-networks-historic-ratings-drops-nielsen-big-data-panel-vab-reports