If that's the intent, I suggest adding the word “both”:
Send for all receipts and invoices in the possession of the Office of the Prime Minister, the Privy Council Office, and any other implicated government departments associated with both: i) the September 2022 trip to the United Kingdom by the Prime Minister of Canada, including for all individuals accompanying the Prime Minister and ii) for Prime Minister Harper's trip in 2013 to honour the late Nelson Mandela and Prime Minister Harper's trip to Beijing in 2009.
Does that sum up what you are looking to achieve, sir?