It seems more plausible that President Trump's strategies were inadvertently disclosed to Fox News, and potentially to Brian as well, or alternatively, that he or one of his confidants had proffered the notion either in confidential deliberations or through public discourse.
While individuals may express directives to Trump, he embodies the essence of a strategic game theorist, one who avidly solicits a multitude of perspectives, judiciously extracting and assimilating the most viable elements, whether in part or in full, while resolutely discarding the rest.
In a similar vein, the Japanese corporate paradigm of the 1980s exhibited a remarkable receptivity to innovation, wherein even a humble janitor could impart insights to the chief executive, and proposals with merit would invariably be embraced and implemented.
Such is the quintessence of Trump's leadership ethos, in a nutshell: "Inundate me with a torrent of concepts, thereby empowering me to forge the optimal resolution informed by the totality of information."