Not only Jane stated what you wrote, also Russell. They knew the McCann’s shortly. In my investigation is that an important fact. They didn’t lie about their relation towards the McCann’s, but that doesn’t ruled out their involvement in this case in helping his colleague and wife, who were confronted earlier that evening with a till now unknown event behind the frontdoor of their appartment.
So when did the hiding of the body occur Youp69? Before dinner, then they all gathered at the Tapas bar to laugh and joke the evening away? Or after dinner when people were gathering to search for Madeleine?
They didn't seem that eager to get their alibis together either, they were all rushing around searching for Madeleine. Jane was in her own apartment with her children. So when did Gerry reveal what had happened to Madeleine and ask them all to collaborate? They were writing the time line out in front of the Police officer.