Yes, thats a good point, Bubo!
The Police had to hide the fact that there was a call from NB in the same way as they had to cover up the 999 call. If you read my analysis you will see that they had tried a number of theories to use. They moved JB's call back to an earlier time. If you read my posts you will find out how in the early stages JM went out of her way to get the time of JB's call speaking to Helen Eaton and the time was 03.15.
If you investigate you will find that they moved it back in stages 03.12 03.02 about 03.00. They manipulated JM's original statemen to 03.30 and then used these timings to suggest that he said stuff like 'its going well'. This idea extended JB's window to half an hour so he could have made both calls. They could also say he phoned JM before the police. That is true. But he was seeking advice from JM at 03.15 because he wanted to make the right call. She told him to go back to bed. Eventually he called the police.
At the trial they had to disclose the Bonnett log because it showed when vehicles were despatched and other relevant information. They had to weave it in by saying that he was recording information given by West. He did but that was added to the text recorded from NB before his call was abandoned. The JB addition is below.
They had to overcome information in West's log that referenced NB. The same applied to the pocket books and the original statements (still undisclosed) of of the CA07 crew. They rewrote this evidence starting at 03.36. This led to West's embarrassing moment at trial when he had to concede that JB called at 03.26. CA07 were spared this by only being questioned at trial as to events after arrival at 03.48. If JB was still on the line at 03.37 they could not get to WHF from Witham in 8 minutes but they said they left at 03.45.
They used this fake Timeline to bamboozle the COLP enquiry who did not know or realise that the 03.36 call was the starting point for the false timeline. The CA07 crew all state that they left at 03.45. They must have had a Tardis to arrive at 03.48 .