The Federal Communications Commission has signed off on broadcast station owner Nexstar’s $6.2 billion deal to acquire rival company Tegna, a merger that would create the largest operator of local television stations in the country. In a news release Thursday, FCC Chairman Brendan Carr said the agency waived a rule that bars a single company from owning TV stations reaching more than 39% of U.S. households. The combined entity would cover at least 60%. “Waiving that rule here is consistent with