Like so many, national arts reporter Geoff Edgers has been grounded by the novel coronavirus. So he decided to launch an Instagram Live show from his barn in Concord, Mass. Every Friday, and many Tuesday afternoons, Edgers hosts “Stuck With Geoff.” So far, he has interviewed actress Pamela Adlon, musician David Byrne, Bill Nye “The Science Guy” and basketball legend Kareem Abdul-Jabbar, among others. Recently, Edgers chatted with comedian Hannah Gadsby from her home in Australia. Here are a few excerpts from their conversation.