New to the game, so maybe this is a noob question, but I was playing the other day, experimenting with different aspects of the game. And I was trying to get a planet to convert over to my side using my influence. So I built a few influence starbases around it, and since I was doing sufficient espionage on their faction, I could see that my influence was almost 10x what their planet was producing. Then I saw the skull and crossbones pop up over the planet, then... nothing. Weeks went by and the planet didn't convert. I kept checking to see that I had more than 4x their influence and I did. So basically my question is, how long does it usually take before a planet will switch? Was there something I was doing wrong? Do I need to research any technologies?
TIA!