Media executive Bob Iger has been the CEO of Walt Disney Co (NYSE:DIS) for more than 15 years including two terms in the role. The CEO hasn’t appeared on the stage at an upfront advertising event since 1994 until breaking the streak earlier this week. What Happened: Disney ended the recently reported second quarter with 117.6 million Disney+ Core subscribers on its key streaming platform. While streaming continues to be a growth area for the company, Iger highlighted content on the company’s linear networks during the advertising event. “I am deeply optimistic about our company, and in a world…