Comcast is working with longtime firm Abernathy MacGregor Group in its proposed $45B acquisition of Time Warner Cable.
TWC is counseled by Sard Verbinnen & Co.
Comcast's communications chief, Adam Miller, is a former president of Abernathy MacGregor.
TWC has worked with Sard Verbinnen in the past, including as speculation of an acquisition by Charter Communications swirled earlier this year.
The mega-merger has dominated media news since it was announced Feb. 13 as it would create a 33M-customer company controlling a broad swath of broadcast and Internet delivery.
The companies are pitching the move as beneficial to customers, shareholders and the combined company. "This combination creates a company that delivers maximum value for our shareholders, enormous opportunities for our employees and a superior experience for our customers," said TWC CEO and chairman Robert Marcus.