Andor is an incredible series that is only incidentally connected to star wars. In particular, the ability to slowly and organically ramp up tension in each of the major arcs is truly special.
I wouldn't call it incidentally. It's actually a very important story. It tells the tale about the early days of the Rebellion and how they sniffed out the construction of the Death Star, eventually leading up (and connected) to the events in Rogue One and A New Hope.