Why on earth would they do something so obvious to leave such a paper trail when you know they could pull this off quietly?
The ideal approach would be to have packages of the "interesting" kind automatically diverted to a scanning location, and then continue on their way...
Dont think of it as them being interested in a single package. They are interested in setting up a mechanism by which ALL packages of interest can be diverted with only very small effort on their part.
The obvious and most probable answer is usually the right answer unless you have evidence otherwise.
Not every weird incident is part of some conspiracy.
Check this: https://www.cnbc.com/2019/05/28/huawei-says-fedex-diverted-p...
According to FedEx’s website, the status “exception” means an unexpected event is preventing delivery of a package, for example a customs delay, a holiday, or no one being available to accept delivery. FedEx declined to give details on what the exception was in this case.
According to Huawei, a FedEx customer service representative in Vietnam replied to their inquiry on May 22 when two expected packages did not arrive on time, saying: “Please be informed that FDX SG received notification from FDX US to hold and return the package to US. Hence, the shipment is not deliver to consignee and now being hold at FDX station and under process to RTS it (return to sender),” the representative wrote in broken English, according to an email Huawei showed to Reuters.
My impression from the prior accounts was that the interception was far more clandestine.
In this age of fingerprints and occasional iris checks, sending intelligence personnel through foreign airports is risky.