Also, it was very obvious who they were talking about in this latest episode.
In the trailer for season 3 we see two or three shots of a Sith like cloaked ghost fighting against Ezra and Kanan, and since all I’m waiting for in Rebels is a hint about Snoke I was prompted to think Maul talked about something evil that he sees in the Holocron, while Ezra is seeing something else.
Obviously the “Two suns” line is a BIG hint at Obi-Wan. There are all the chances in the world that Maul also saw Obi-Wan, it’s the obvious interpretation, indeed. But secretely I hope he saw something else…
As much as it is logical to have Maul and Obi-Wan confronting again, I feel like the Obi-Wan alive by the time of Rebels should be the hermit we know in Episode 4 and not a Jedi fighting old clone wars threats.