I can be so sure based on my 4 years of looking into Brianna's case, going on location in Vermont several times, talking to her family, her friends, law enforcement and keeping myself updated on Maura's case sporadically. I've spoken to plenty of people including law enforcement and private investigators about Brianna's case, I have yet to find any clear reason to believe her cases is related to Maura's and nobody has ever given me tangible proof that would point in that direction. The theory of the disappearances being related makes for a good movie that's for sure but that's about it, people sometimes apply their own bias to things they want to see connected but that really aren't. Not only that but of all the people I've spoken to, not one of them believes the two cases are related or that they have anything to do with the Connecticut River Valley Killer which by the way stopped operating almost 20 years before the two disappearances. I respect your opinion and I am telling you what I know, there have plenty of opportunities for people to come forward and show me, law enforcement or the public why we should think the two cases are connected but so far nobody has done that. If I knew the two cases were related, I would have no problem coming forward to say it but that's not what my research tells me and what the people that know the two cases have told me.