Co-hosts of the And That’s What You Really Missed podcast have opened up on their last day of filming with the late Cory Monteith. The world was heartbroken back in 2013 when Glee superstar Cory Monteith tragically died at 31-years-old from a “mixed drug toxicity” of heroin and alcohol. His co-stars Kevin McHale and Jenna Ushkowitz co-host a Glee rewatch podcast And That’s What You Really Missed, detailing what filming each episode of the show was like. In their most recent episode they were recounting season 4, episode 20’s episode, Sweet Dreams, which also happened to be the last ever episod…