@Voolio - from your reply to me on the previous thread (the thread closed as I was writing)
I would struggle then to understand how Sam Cohen would not recognise the sensitivity of this letter in the broader and simultaneous situation of AMW and therefore not escalate it.
What we know of the letter we have been told by The Sun (presumably the extracts they feel most lucrative) and the police.
The Sun says that it was written by TMsr's ex-wife, approximately 40 years post divorce.
It says she describes a conversation in which she accuses him of a criminal act, which he denies.
She apparently then says he then, in the same conversation, describes obnoxious behaviour which was not illegal.
The police say:
The author of the letter suggested they were writing to raise concerns relating to the security of the Duchess of Sussex. While the letter did not actually contain any information specifically related to security matters, it did contain a number of claims about alleged offending outside the United Kingdom.
The letter was assessed and subsequently passed to the office of the Duke and Duchess of Sussex for their awareness. The details of the allegations in the letter were not shared with other law enforcement agencies.
I have read nothing yet about this letter which suggests that anything in the contents is valid, reliable information on which anyone would act, or which would require referral to other agencies, or 'escalation' as you suggest.
It was passed to the D&DoS 'for their awareness' - not for escalation.