TSN Hockey Insider Chris Johnston joins Leafs Lunch to discuss Brad Treliving and Kyle Dubas being introduced yesterday by their respective new clubs. Johnston shares his thoughts on whether the Leafs and Penguins are a budding rivalry with Dubas landing in Pittsburgh, why Brendan Shanahan might be more publicly visible next season after lurking in the background in recent seasons, why the timeline for Auston Matthews to sign an extension with the Leafs is uncertain at this point, and more.