What do Kat and Albert tell Paul about his encounter with Gerald Duval?

Kat and Albert merely assure Paul that he has done his job. Their words were comforting.

But by next morning I can keep it to myself no longer. I must tell Kat and Albert. They both try to calm me. "You can't do anything about it. What else could you have done? That is what you are here for."
I listen to them and feel comforted, reassured by their presence. It was mere drivelling nonsense that I talked out there in the shell-hole.