I’m more convinced with the students witnesses- we all discussed with locals at the beginning about screams being misheard and have done on other cases as foxes. on top of that we have had it confirmed they rang it into the police the day she was reported missing (which we have questioned about the other report, I’m not saying it isn’t the case, merely that we haven’t heard it stated). Also some of us were a bit dubious about the length of time in the dead of night he was seemingly looking out of the window, even for many minutes after screaming stopped, and despite only looking at his clock twice seemed to be able to guesstimate exactly how many minutes had passed. Ask anyone to predict a minute- the majority of people will be incorrect even when trying to count the seconds (look at the cube on tv if you need more proof)