For the technically inclined, the problem was a logfile that had been partially overwritten, and which the analysis software interpreted as the traces of the Facetime call, linked to one of the contacts in the Contact List - i.e. NBC. This was recognised as an error by the tech, which I consider to be impressively thorough of him, and in fact the software company were notified, and they confirmed it as a false positive as reported on the witness stand today. They fixed the "bug" and released an updated version of the software immediately based on our police tech's report - very smart of him.
So contrary to the opinion of one or two, it was NOT "hushed up" - it was recognised as a false positive and corrected, just as Neil Robertson described today. This was what all the talk was about today between Peter Davis and Neil Robertson about logfiles, and how reliable they were. But what Davis didn't do (deliberately, I'm sure) is to highlight the fact that Robertson was smart enough to pick up the error and get it fixed. One of the tricks of the barrister, right Ali? Leave it hanging where you want it...
This was the gist of all the tech talk on the witness stand today, which may or may not be reported in the MSM, as it was very technical. Kate Kyriacou tweeted a comment about being bamboozled by a load of tech talk - this is what it was all about..
Just out of interest, in case you may be considering doing something sneaky, if you think your iPhone (or most others) are private, think again:
http://www.cellebrite.com/forensic-solutions/ios-forensics.html
And a review:
https://viaforensics.com/resources/white-papers/iphone-forensics/cellebrite-ufed/
EDIT: The above is my attempt to put into reasonably straightforward terms the gist of what was talked about in court today, as reported to me by someone who was there and who is a fellow tech-head.