From Parallel Screens to Shared Experiences: Evaluating Audience Engagement in XR Broadcasting. - Bhagyabati Moharana; Eoghan Paul Hynes; Bryan Dunphy; Conor Keighrey; Yujing Zhang; Albert Hosea Luganga; Sahir Sharma; Julien Castet; Trevor O. Clochartaigh; Lorraine Chuanaigh; Tina Nic Cába; Tomás O. Riada; et al. (IMX, 2026)