The physical locations aren't really important, the issue is that this was done over the phone, one department to another. Might have been 3 miles away, or simply 'upstairs' - doesn't make a blind bit of difference.
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Oh, but it does...
You see according to PC West, the clock that he was relying upon was ten minutes fast, and if Bonnet was relying upon a different clock that told the accurate time, why is Bonnet recording that CA5 was dispatched to the scene at 3:36am, if by a reliance upon PC Wests log (3:36am) CA5 was dispatched to the scene as a result of JB's call to the police, which by a reliance to the ten minute fast clock in the control room, took place at 3:26am?
Why is PC west suggesting that JB's call took place at 3:26am, and CA5 was dispatched as a result of it, yet Bonnet is suggesting that CA5 was not dispatched until 3:36am? Since there is no evidence or information contained in the Bonnet log, that he recorded anything at all that was told to him by PC West. or vice versa?