Not according to one of the jurors:

"At the end of the day, there was so much doubt," the woman said. "The prosecution didn't have a figurative smoking gun. There was not a single moment throughout the presentation of that case where you could say 'Yup, 100% I'm certain she did it' or that she didn't do it. There was too much gray area."

https://www.cbsnews.com/boston/news/lindsay-clancy-juror-interview/

Couple that with the the sketchy findings about the husband's actions and whereabouts, there is indeed question and reasonable doubt.