Despite being a hermit for so long, Kenobi is more powerful than he was during the Clone Wars, so just because he’s pushing 60 doesn’t mean he’ll be easy to defeat.
The two of them previously clashed in The Clone Wars several times.
However, Maul has also grown in power, so this could be the most epic showdown between them right after their first battle in The Phantom Menace.
Although a new battle between Obi-Wan Kenobi and Darth Maul is exciting, it won’t be the first time they’ve fought since the former cut the latter in half approximately three decades earlier.