Last bread:
It's psychologically subtle, hence why a lot of people miss it. He, himself with his act, isn't subtle, just the technique.
That was her husband.
Israeli Secret Intelligence Service aka ISIS
Ya it's easy to tell its the same source. Many have tried to copy the style but can't, simply because its following a plan of action that ties things together from way before. People who study writers, which I have, can tell fairly easily. It's like realizing Barry didn't write his own books, Ayers did. Or an even better example would be cases of murdered/missing people, who's phones were used to text relatives/friends by the perpetrator, and the simple text messages set of alarm bells for those who know the person.