Why is that in bold? I've shown you the window 3 times now. Anybody could get through that unlocked window next to the front door. You don't need a key. It was reported that Mrs Fenn was watching tv when she heard a noise in the bedroom. I presume the burglar was looking in draws and cupboards when he made a noise. After all, he's there looking for valuables not to change the sheets.
No, almost without doubt, it wasn't that window ... It doesn't make sense that he would struggle thru a window next to the door where the owner could get out faster than he could climb thru it.
What made the noise that slow Mtrs Fenn heard and prompted her to get up and find her slow way to the window?
It was the sound of a window being unlocked and slid open, then maybe the shutters lifted imho.
I am of the honest opinion that he exited from what i believe is the window of the other bedroom. THis is the rear window on the side of her flat, {facing the balconies that I think it quite likely that a man was watching and directing the abduction three weeks later] if he exited here, then he could wriggle thru the window and step right out on to the slightly sloping roof to the kitchen of 5A. from there jump straight down on to the area in front of Kate and Gerrys front door or alternatively the longer jump to the street below
He could even slide or walk down that roof and clime down using block 5 / Rua Francisco G M wall as a half way point imo.
BTW, it is very doubtful, having heard Mrs Fenn come home that he would be looking thru any cupboards or drawers. All he would want was out, as fast as ;possible
