Indeed. He hid behind process, did not go into any speculation or opinion, stuck close the rules based system approach. Safe and smart.  I would recommend to find the first chapters of Six Sigma Greenbelt on Linkedin. It is free and gives you in a simple way the gist of process thinking. Especially, with regards to risk and remediation. Very, very enlighting.  Then go back to what RR has to say about process.  What did he leave out?  That is why you see him become nervous. I would not be surprised to discover that the probing questions on his behavior .... where not actually meant to be posed, but rather to provide him the basis on which he could hide behind ...process.  He indeed played it well. Compared to when he was in a hearing last time, he is very very cautious and nervous. And only at the softballs he was the old RR.