By THOMAS GRYTA, SHALINI RAMACHANDRAN and REBECCA BALLHAUS
Updated Oct. 24, 2016 12:26 a.m. ET
$85.4 billion deal is questioned by politicians, industry groups, media and telecom rivals
AT&T Inc.’s blockbuster $85.4 billion deal to buy Time Warner Inc. promises to reshape the media landscape—if the companies can navigate a series of obstacles, including possible opposition from U.S. antitrust authorities and objections by lawmakers and media and telecom rivals.