New evidence to explain Hamilton's displeasure
While the fall-out from the crash involving the two Red Bull drivers has understandably dominated the Formula 1 agenda in the days since the Turkish Grand Prix, a potentially just as dangerous flashpoint has been largely ignored.
"What was going on there?" Hamilton asked his team-mate Jenson Button as they prepared to go on to the podium, in a clear reference to the part of the race when Button overtook Hamilton for the lead - and was passed back at the next corner - despite both drivers being told to save fuel.
But new information has since emerged that sheds new light on what happened - and exactly why Hamilton seemed so downbeat.
After the race, Hamilton said he had been given a target lap time to meet to ensure he got to the end, and that it had been too slow. "All of a sudden, Jenson was on my tail," he said.
For his part, Button said that he had been told to save fuel, but not how much, nor how fast to go.
But the official Formula 1 website has now published its edit of the Turkish Grand Prix, and it turns out that Hamilton was not telling the whole story. You can watch it here, although you'll need to register to do so.
In the video, Hamilton can be heard asking his team on the radio after being told he needs to save fuel, and that Button is also doing the same: "Jenson's closing in on me, you guys. If I back off, is Jenson going to pass me or not?"
His engineer replies: "No, Lewis. No."
And yet that is exactly what happened. No wonder Hamilton was upset - although he did his best to keep what was bothering him to himself. One suspects he has been less circumspect with the team in private.
So what was going on?
Quite often, when two drivers from a single team are told to save fuel when they are running one-two, this is code for them to hold position until the end of the race.
Team orders are banned in F1 if they "interfere with the race result", as the rule book puts it - but there is nothing to stop a team coming up with a series of coded messages, the meaning of which is clear only to those involved.
So why was Hamilton told Button would not overtake him? Why did Button overtake him?
Did Button not get the message? Did he not understand what he was being told? Did he ignore it? Did McLaren secretly want Button, as their lead driver in the championship, to pass Hamilton and win the race?
I understand that, actually, it was a simple misunderstanding, that the two sides of the garage were not telling their drivers the same thing.
Hamilton's engineers had given him a lap-time target to ensure he got to the end of the race; Button's had told him to save fuel but not given him a target.
Hamilton had been told that Button would not overtake; Button had not been told that he couldn't.
It is also worth mentioning the background to McLaren's wishes not to be seen to interfere with their drivers' ability to race each other - despite Max Mosley no longer being FIA president, they are still paranoid about being jumped on by the governing body at the slightest opportunity, as they believe was the case during the Mosley era.
I'm told Hamilton is not particularly upset about this - although had he not been able to get back past Button, and ended up finishing second behind his team-mate, he certainly would be.
Be that as it may, you can bet Hamilton will have been asking team principal Martin Whitmarsh for an explanation, and some reassurance about what actually had happened.
One thing is abundantly clear - someone wants this information out. In case the viewer is in any doubt about what has been said on the McLaren radio, formula1.com helpfully provide subtitles!
Interestingly, the formula1.com video also features new radio transmissions from Red Bull.
But not, sadly, perhaps the most telling conversation that appears to have happened in their team during that race - that, as Hughes reported in Autosport last week, of team principal Christian Horner telling Mark Webber's race engineer Ciaran Pilbeam to order the Australian to let Sebastian Vettel pass, a message Pilbeam did not pass on.
What is broadcast for the first time, though, is Pilbeam urging Webber to "use your overtake button for a boost on the straight" to help him defend against Vettel on the straight before Turn 12 on the fateful lap 40.
The more that comes out about the Webber-Vettel collision, the more it appears that Red Bull were trying to engineer a win for the German.
There is Horner's order to Pilbeam. I understand this was not passed on because Pilbeam was preoccupied with something else at the time.
Then there is adviser Helmut Marko's insistence after the race that Webber was at fault, when the vast majority of observers pinned most of the blame on Vettel for turning right into Webber when he was still alongside, if nosing ahead.
It also transpires that in the post-race debrief - which Vettel did not attend because he had left the track - Horner, Marko and chief technical officer Adrian Newey "laid into" Webber and Pilbeam. And strong words were said in the other direction, too.
I hear another interesting fact, as well.
Red Bull said after the race that Webber had asked the team to slow Vettel down. But that is not accurate. Having noticed Vettel was quicker than him on the straight, Webber had actually asked whether Vettel was on the same engine settings as him.
I understand the team and Webber will make this clear in Canada this weekend.
Just as at McLaren, there appears to have been an element of confusion and mixed messages involved at Red Bull.
Nevetheless, it does look like Red Bull - who, like McLaren, profess to treat both drivers equally - were keen for Vettel to win. If so, why?
They will argue, I believe, that they wanted to ensure they got a one-two, and that they were in the awkward position of having to fend off two McLarens while also saving fuel to ensure they got to the end.
They will say they believed their best hope of doing so was to have their faster driver on the day - Vettel - lead and pull out a gap, and leave their slower one - Webber - to hold back the McLarens.
But you can argue that this is contrary to the rules forbidding team orders. And you can imagine how that will look to Webber, a man who has long believed the team secretly favoured Vettel and could be forgiven after Turkey for feeling that his concerns have been confirmed.
To add to the intrigue, Red Bull announced on Monday that Webber had signed a new contract with the team and will partner Vettel again in 2011.
This, we can be certain, is far from the last we have heard of either of these issues.