It was definitely Abercrombie for most of the time, but there's one sentence - at around 20:40 in the
episode, after Obi-Wan comments on Maul trying to form an army of pirates, Palpatine says, "So let him. Let him play with the rabble. They're just petty crooks. It is of no relevance to the Senate compared to the Separatist threat." The "They're just petty crooks" line sticks out like a sore thumb, even though everything around it sounded normal, so I'm thinking it was some ADR done after Abercrombie died by a different actor. It sounds nothing like him, and it was mixed bizarrely when I watched it on TV.