It now remains highly probable, that both calls mentioned in the two phone logs (3.26am and 3.36am) overlapped one another for a period of 5 to 6 minutes, between 3.36am and 3.42am, and that reference to this was / is recorded on the reverse of the original page 1 of Bonnets 3.26am phone log...
The all important information concerns the GPO calling the farmhouse at 3.42am and establishing that the phone had been left off the hook, whilst Jeremy was still speaking to the police, on the other line...