Like, Obi-wan knew that Vader had a personal shuttle with which to pursue him in alone, and also had the Grand Inquisitor with which to continue pursuit of the refugees. Yet Vader just diverts the entire Star Destroyer to follow Obi-wan and then just leaves it behind and says that he will now follow Obi-wan alone in his ship. Baffling.
It was « TLJ for dummies ».