Its obvious to anyone who knows about body language and rhetorical dodging, Dana sidestepped the question because he couldn't ANSWER it. He never said Brock called Pat, he said Brock called him, granted...... but if you believe Brock called Dana on the subject of Pat, then it would be logical for Brock to call Pat directly because they are actually friends, unlike Dana who is Brock's boss. Dana knew if he answered specifically, he would likely be called out on that and it would be clear he is full of it, so he sidestepped the question.
You don't dodge a question like that if you have nothing to hide, plain and simple.