He took emergency calls. Why would he have had to state that there was only one call, it wasn't until 2007 (ish) that the suggestion of Nevil calling the police came into being. If there had been two, he would have said so.
Are you accepting that Bonnett did take calls from the public? Has that point been established?
I don't agree with your premise about Bonnett. The issue here is one of interpretation. What I'm trying to isolate is whether there is a gap in the chain of logic when we apply YOUR interpretation to the Bonnett/West records.
The whole point is that if there were two calls, Bonnett needn't have said anything as the telephone logs he compiled in conjunction with West reflected the position accurately. If, on the other hand, there was only one caller, Jeremy, I am wondering why that might not have been brought to somebody's attention long before Bamber came under suspicion, as it seems to me a pretty telling indicator that something was not right with Bamber's story.
Just to be clear, I am not necessarily suggesting that Bonnett personally had a duty to raise the matter. He was a civilian police telephone operator, not a sworn constable, but if we accept that your reading of the documents is right, it does seem odd that this wasn't raised.
I think it is possible that Nevill did call and, perhaps briefly, got through to Bonnett, and for any one or combination of reasons, Bonnett has forgotten this as the records were later interpreted as 'one caller' rather than two.
One final point, for now: I don't believe that it took until 2007 for it to be suggested that Nevill called. The idea of Nevill dialling 999 or otherwise alerting the authorities is a perfectly obvious line of inquiry. What looks more likely to me is that no evidence of such a call had been disclosed, and therefore whether or not such a call had been made could not be established by the defence. The Bonnett log has subsequently been made available at some point, and this does, on its face and when read in conjunction with the West document, suggest there were two callers, not one.
I ought to add that I do accept that Bamber's defence does not rely on Nevill having made a call, and yes, I should have taken that into account in my previous post above when I discussed Bonnett specifically.