It is clear that they were creating escape routes. You are suggesting Taff's missed these but it is much more likely that he checked with the TFG as to which windows they had opened. Good that you admit to getting the wrong room. However it does not explain why they used the kitchen window theory based on the families porky pies rather than blame Taff's who had died and could not provide the truth. Nor does your straw clutching explain why all involved agreed with Taff's in the first instance. I am sorry but your answers as you predicted are not good enough IMO
Well, I thought you didn't like assumptions? There's one right there! That's not actually what he said though was it? He said he checked ALL rooms and that the windows were all closed and locked - but that wouldn't be true because the RT opened the dinning room window - perfect time for him to acknowledge that - however, he said nothing. Others did though so we know it was open and that someone opened it on the morning of the murders - but NO ONE mentioned opening the bathroom window. The only reason that the catch would have been open (if opened by the police/RT) would be to open the window and yet no one mentioned opening the window or the window being open. If it were open then someone had to close it, said person would also surely have locked it, yet no one mentioned closing it either and as we know, the lock was open.