Reports on Hill lethal injection argument

In pre-argument posts here and here, I pondered whether at oral argument today in the Hill case the Justices would frame the issue as a narrow one concerning litigation procedures or as a broad one concerning lethal injection's basic constitutionality.  Early reports on the argument from the AP and Reuters and the Miami Herald suggest that the lethal injection protocols and their constitutionality was robustly discussed.  The AP headline is "Justices Debate Lethal Injection Method" and the Reuters headline is "US justices query if lethal injections cause pain."  Hmmmm....