Formosa wrote:Nids get nothing from killing daemons, and certain deamons get all they need from killing nids (blood)
In the middle of a daemonic incursion, there's still the
planet to consume. That's what the Tyranids want, not the population defending it. They gain very little from the defenders in the way of biomass. So invading a planet mid-incursion still has plenty of biomass to consume. The main question is how much of it is corrupted. That's what the Tyranids would avoid eating.