I was able to view the police interview/video given by GZ the day after the incident. Anderson Cooper played it last night on AC 360. In that video, GZ states he was calling for help after being punched in the face and knocked to the ground. This was well before any of the 911 calls were released to be heard by the public or anyone besides the 911 center. So GZ had no idea his voice would eventually be heard on various 911 calls, in the background. As for the question as to why GZ *continued to follow TM*, we have no evidence that he did 'continue to follow' after having said 'okay' to the operator.
He may not know the 911 call was recorded...however, he knew there were MANY eye witnesses that heard those screams. He had to explain where they would have come from - whether they were Trayvon or himself.
There is in fact evidence he continued to follow him. He said "OK" to the "we don't need you to do that" 20 seconds after he left his car.
However, he stayed on the for for another 90 seconds. If he had not followed him, he would have already been back in the safety of his car for over a minute.
We know, if my timeline is correct, over 2 minutes later, Trayvon was shot.
And GZ was NO WHERE NEAR his car!!!
So where was he all that time? If my math adds up and my timeline is correct, that's over 3 minutes.
Except as pointed out, 20 seconds after he left his car he told the 911 operator "OK" to not following.
Clearly, he didn't follow 911 instructions. Clearly, the evidence shows he was still following.
And of course, this witness stated TM told her a creepy blah blah was following him.