Donald J. Trump’s son-in-law has discussed the possibility of a Trump-branded television network with a friend who has helped guide such deals.

Jared Kushner, who is married to Mr. Trump’s older daughter, Ivanka, had conversations about the idea with Aryeh B. Bourkoff, the chief executive of LionTree, a boutique investment bank that has helped advise media deals.

But such an effort, reported earlier on Monday by The Financial Times, would face enormous obstacles: Creating a television network would require a major cash investment, as well as a willingness by cable providers to carry the network. Without both, discussions of a television network would remain in the realm of fantasy.

About a month ago, Mr. Kushner informally reached out to Mr. Bourkoff, a veteran media investment banker, about setting up a Trump television channel, according to a person briefed on the matter. But the conversation with Mr. Bourkoff was brief and has not progressed since, and the banker is unlikely to work on such a network, this person added. Mr. Kushner and Mr. Bourkoff are friends and speak frequently.