Musk’s X, formerly known as Twitter, has added Amazon’s Twitch livestreaming platform as a defendant in its ongoing lawsuit alleging that advertisers illegally conspired to boycott the platform, withholding billions of dollars in advertising revenue.

Business Insider reports that Elon Musk’s X has expanded its legal battle against advertisers by adding Twitch, the Amazon-owned video streaming platform, as a defendant in its ongoing lawsuit. The complaint, originally filed in August, accuses members of the now-defunct Global Alliance of Responsible Media (GARM) of illegally colluding to withhold advertising revenue from the platform.