The PJ took Mrs Fenn's statement in August AFTER the cadaver dogs had been into 5a. Why do you suppose the PJ were so focussed on the crying that they omitted to ask Mrs Fenn how many times she had heard the patio door moving that week, bearing in mind she was familiar enough with the sound to state that the crying only stopped when the parent(s) returned via the patio door? The PJ had had the Tapas 9 timeline for 3 whole months & were already suspicious about the checking.
They had crying for over an hour unchecked so every 30 minutes checking on their children to them was a lie regardless of other checks.
When asked if on the night of May 1, 2007 he went to have dinner at the Tapas with Kate, he says yes. As customary they would come and check on the children every half hour, usually alternating. They arrived at the Tapas around 20:30, and then went to the apartment every half hour, until they arrived back, at around 23:00, plus or minus 10 minutes. Occasionally one of the others in the group made the check, he does not remember if this happened on the 1st. It is not true that Madeleine had been crying that night for an hour and 15 minutes, because she was not alone all that time.
http://www.mccannpjfiles.co.uk/PJ/GERRY-MCCANN-ARGUIDO.htm