This is another thing that both frustrates and captivates many people. Interviews have family saying things that seem to be the opposite of what interviewee means.I thought the reporter failed miserably. The fact that we don't know if SG meant that the killer must have been targeting the third floor, or didn't have to do that because his target(s) were on the 2nd floor, shows that the reporter needed to ask a clarifying question. I did not perceive these comments as relevant to the LE chain of command. He said "he" didn't need to go up the steps twice. Who? The lead detective? It makes more sense to me that he is referring to the perp.
Also, it would have been nice if he had gotten clarification about the means of death comments... K vs. M? E/X vs. K/M?
Could be many reasons including stress, meds or the person realizes he's said something he was told not to reveal, or something deeper, like planned ambiguity.
JMO.