If it's a crime to be a stubborn know-it-all then both you and Gerry should be locked up. You need to ask this far more relevant question - if the Tannerman sighting was so vitally important in establishing an alibi for Gerry then why on god's earth did he deny seeing JT? I know you have some lame explanation for it but it's so lame it's impossible to take seriously. Your "thesis' completely falls apart at this point.
You do raise a very good question. Why would Gerry deny seeing JT ? Probably for the very same reason that he was insistent that he had his back to her as she passed by on the other side of the road, to distance himself from JT's claim if everything went pear shaped.
Deniability has always been his watchword. At that time it was quite possible that someone may come forward and say ' oh yes I was on my balcony having a fag and saw the two men talking but definitely didn't see any woman'. How could Gerry possiblly say he had seen JT when he didn't know how things were going to unfold ?
BTW when did this from the collective statement handed into the PJ on the 10th of May.....
'2115: JT leaves table, and sees GM talking with fellow resident ("Jez" Wilkins) outside the patio gate of 5A. The two were standing just up the hill from the gate towards Rua A. da Silva Road. She did not speak to GM as she passed. '
.....to being on the other side of the road ? Did he agree with JT to keep her on side while compiling the timeline then right royally shaft her when he went into his interview later that day or perhaps the story was changed because it was pointed out to Mr McCann during that interview how impossible the scenario detailed in the timeline actually was ? We can but guess !