Excellent work!
But whatever about the 'what' and the 'who', the answer to 'Why?' is surely logical rather than speculative..........
Thanks Alan.
It isn't an either/or situation.
Answering the question "Why was CE399 substituted/planted/introduced into the chain of custody",
must be speculative because we don't have direct evidence of it, but that speculation
must be logical otherwise it's meaningless.