This question is mainly for me looking at the different feats and class powers I have with a Solarian build I'm going for. Without going into too much detail, I have a Soldier 1/Solarian 4 with Blitz (because, of course I do) and I've been looking at my level 5 feat, figuring out what I want. Since I am getting my second revelation at the same time, I saw Dark Matter being there and thought...DR is nice. But then I see the feat Improved Resistance, which also gives me DR...without being attuned...and at my full level rather than half Solarian level.
I'm not looking for advice here. More to the fact, I'm wondering if taking Improved Resistance for Kinetic would stack with my Dark Matter. Chances are, it won't, but I'd like to know fully, and if there's a rule in the book somewhere that describes this, please list this too.