The Comcast-Altitude TV blackout is threatening to impact a fourth consecutive season of local Avalanche, Nuggets and Rapids game broadcasts. A second mediation attempt on Tuesday to resolve their ongoing antitrust lawsuit did not provide a resolution, according to Comcast spokeswomen Leslie Oliver. It is unclear when the parties will meet again. But it’s now possible the blackout will extend into fall when the Avalanche and Nuggets begin their respective 2022-23 seasons. “We appreciate the court’s efforts to facilitate these conversations,” Oliver said in a statement to The Denver Post.