Walter doesn't bother answering. With Chaos ready to intervene, he didn't need to give Felix more than a base amount of attention so he would be aware if he tried to lunge at him.

He turned down some corners, heading down towards the lab area. While all Rockets had access to the area, it required their ID cards to pass through the barriers. Even if Walter wasn't intending to do some work, it should mean that Felix would be discouraged from following him.