Meta attorney Kevin Huff suggests that Instagram benefited largely from cross-posting to Facebook prior to the acquisition, but Systrom says it mostly cut the other way. “We helped Facebook make their app more engaging by posting photos over to them,” he says. After Huff shows him a 2012 email Systrom sent to Zuckerberg crediting Facebook cross-posting for Instagram’s success, he asks if Systrom was lying to Zuckerberg at the time. Systrom answers with a stern look and a single word: “Sir.”