It’s been quite a week for AT&T. One of the largest providers of wireless, internet, and cable TV in America, it closed an $85.4 billion deal last Thursday to acquire Time Warner, one of the biggest entertainment companies in the world, after a federal court blessed the merger over the Justice Department’s objections. Judge Richard Leon, of the U.S. District Court for D.C., had rejected the government’s argument that AT&T would lessen competition by leveraging Time Warner’s “must-have” television content to drive rival customers to its products.

Within one week, AT&T announced a plan to use Time Warner’s television content to drive rival customers to its products. It’s just one of several announcements from the new conglomerate that show the government was right: AT&T is determined to use its economic and political power to expand its reach and dominate markets.

On Thursday, AT&T unveiled a service called WatchTV, a “skinny bundle” of 31 television channels, many of them under AT&T’s control after the Time Warner merger, as well as on-demand content from those channels. Subscribers to AT&T’s two new unlimited data plans get WatchTV for free, and the pricier plan includes HBO, the crown jewel of the Time Warner merger. Non-AT&T customers who want WatchTV can get it for $15 per month—but without access to John Oliver and Silicon Valley, which would cost another $15 through HBO Now.

AT&T considers this an expansion of consumer choice, a new option for cord-cutters seeking cheap streaming TV. But in reality, AT&T is using its exclusive access to HBO and other Time Warner programming to push people to sign up for its phone plans. It’s no coincidence that AT&T also quietly announced price increases for the unlimited data plans it’s trying to attract people to.

In antitrust parlance, this is known as “tying.” As the U.S. Federal Trade Commission notes, “The law on tying is changing. Although the Supreme Court has treated some tie-ins as per se illegal in the past, lower courts have started to apply the more flexible ‘rule of reason’ to assess the competitive effects of tied sales.” But using HBO to drive cell phone subscriptions, when rivals can’t do the same, should face legal scrutiny. There’s a more subtle form of tying here as well: Any subscriber to AT&T’s unlimited data plans gets a $15/month credit to DIRECTV, AT&T’s satellite TV subsidiary.