this might be best asking in the kingston thread to see how ppl tracked it for pp coming from the kingston VO. CHC-Islamabad used TCS and they seem to have a special arrangement with them so all packages from the embassy are sequentially numbered, so its easy to just go through them. based on multiple people's feedback on the islamabad thread there is a good consensus on what tracking info is needed on the tcs tracking details website regarding a package to show that it MAY have a passport in it versus just regular docs.
maybe the kingston VO has a similar arrangement with DHL?