Pelley 'is not going quietly' after his job loss from 60 Minutes, the most watched news show in the US.
Nick Bilton says Pelley showed no interest in collaboration.
Gayle King’s enormous salary on 'CBS Mornings' had been scrutinised in recent weeks, as the show’s viewers slipped below 1.8 million.
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It brings an end to a two decade long tenure on the network.
The now ex-staffer lambasted her former employer, CBS News, for its new '21st century' vision for journalism.
It comes as the Paramount-Skydance overhaul fuels speculation across the network.