It is obvious that it would be possible to match accounts in a great many cases, and if the commission wanted to know more precisely how good the matchings coul

It is obvious that it would be possible to match accounts in a great many cases, and if the commission wanted to know more precisely how good the matchings could be, it seems like it would make more sense for them to ask Facebook and WhatsApp for social graph data and hire their own scientists to investigate that than to trust Facebook's answers on such a subjective point. But really it seems like they must have basically just been OK with Facebook monopolizing messaging because it was obviously pretty terrible for competition to allow this merger even assuming they thought the users of Facebook and WhatsApp wouldn't be able to be merged very well. However, I would be really curious to hear from someone who knows something about their actual thinking and motivations (and I guess what the law says since they may be quite constrained by that).