It sounds like a stupid question to me. If Chris had known the identity of the person attempting gain entry, why on Earth would he be calling the police. If the interpretation was as you have described, the call handler should have asked those questions. Last year I called 999 to report teenagers wandering around the street carrying rifles. I was asked what make of gun they were carrying. As if I would be able to see, from where I was, the name of the manufacturer on the weapon. I had told them that I was about fifty yards away, if I had been as close as two feet away, I would be having a very different conversation. It took six calls (from other people as well) to 999 to ask why no officer had been to call after three hours and we were told that it was not a priority. I then got a call,
forty-eight hours later, to ask if they were still there.
Earlier this year I called 999 again regarding children, as young as ten, riding around the street on motor cycles. They were flying out of the alley ways into traffic, on a road with the national maximum sped limit. It appeared they were playing dare with the traffic. The call handler told me that I should not be calling 999, as it wasn't a life and death situation.