It's a double-edged sword isn't it. They changed their timelines from what they initially said after collaborating with one another to work out when certain things 'must have' happened. It's hard to know whether this made them more accurate or not. I'm pretty certain though, that in amongst all the various timings and events that are widely regarded as 'true', some of them are actually incorrect.
There's a number of things about MO's 9.25 check that bother me, some of which I've already touched on. His account is very uncommital about the status of the apartment. He effectively says the shutters may or may not have been open at that time, MM may or may or may not have been in there at that time and an intruder may or may not have been in there at the time. It tells us nothing but he clearly wants to keep the option open for Tannerman (who was seen before this check) to be the culprit.
In his interviews, he says he spent 1 or 2 minutes in the apartment, yet he didn't actually look into bedroom to check if MM was ok. Even 1 minute is actually quite a long time to do a simple listening check. He later justified this time by adding to his story and claiming he was perusing the books in a bookcase:
"you've got sofas here and you've got a bookcase here..."
"...One or two minutes maybe. I remember looking, they've got, all the rooms had sort of a book supply and so, because we were spending all this down time at lunchtime looking, you know, doing a bit of reading or maybe sunbathing, but some reading, so I sort of remember sort of looking along their bookshelf as I walked through to see if there was anything that I could sort of take to read for the next couple of days, erm, so it might have been, you know, a minute or two'."
While it's true that several rooms at the Ocean club did indeed have bookcases with shelves, the McCanns apartment did not actually have one! There was a small cabinet/cupboard with what looks to be about 4 books on top (see picture 1 on the right hand side) if that's what he is perhaps referring to, but it seems a stretch to call it a bookcase or bookshelf. And to say "looking along" makes it sound like a lot of books lined up, not 4 books in 2 stacks. Also, why look for a book to start reading at the end of your holiday?
He also says he managed to see into the parents room as he left:
"I remember sort of being able to pivot here and be able to see this room door was open as well and those shutters weren't down, they were just curtains and that was fairly, fairly light as well. And I just sort of came back out really through the same way and shutting the patio doors'."
The door to the parents room directly faces MM's bedroom door and is about 2 metres away. In picture 2, it is around that corner on the left. Picture 3 shows the view of MM's door from the parents room from directly in front of where the shutters are. So, for MO to be able to see those shuttters in the parents room as he turned to leave, he had to have been standing no more than a couple of feet from MM's door. I cannot understand therefore, if he was already that close, why he didn't look in through the doorway to see where MM was. He even states he thought that MM's door being open was odd. Yet after making the effort to walk all the way up to the doorway, he still didn't think to look in there to check if MM had maybe woken up and opened it herself? That would have been my first thought.
There's also a number of other inconsistencies with his account. He said the check he did with ROB was at 9.25 but ROB said it was 10 mintues later than that in his initial interview. He said the table with the lamp was round when it is actually square. He thought MM's room had 2 windows when there was only one. He initially said they all went into MMs bedroom when KM raised the alarm, then in his second interview he said he only went into the apartment but not into MM's room, then in his 3rd interview he says he was "almost 100% sure" he did not go into the apartment at all when KM raised the alarm.
I also find his use of language peculiar, like this excerpt when he is questioned about what he saw of the twins during the 9.25 check:
"You could see the shapes and you could see they were breathing, you'd stop and look and you could see they were sort of breathing, but in terms of sort of features and standing over and seeing where their heads were, and I couldn't say whether it was Sean or Amelie that was closest, it was just sort of, erm, sort of children in cots"
What does he mean by "you'd stop and look"? That sentence doesn't make sense. And why does he keep saying "you" when he should say "I". It feels like disassociative language.
I don't know, maybe he is telling the truth about the check, but something just doesn't quite feel right about his account.