I have a Helios Ore deposit. It has a +2 Starship Construction adjacency bonus. I build a Starport next to it and get the bonus. Then I build a Helios Ore extractor on the deposit. The starport itself has a +2 Starship Construction adjacency bonus. It doesn't benefit the extractor. Okay. (Really?)
Then I build a Factory next to the Starport. The Factory has a +1 All Construction adjacency bonus. That's ALL Construction. The Starport gets no bonus.
Riddle me these, please.