A scrum-penalty and a slap down, on such small margins do tight Test matches swing.
All the talk after Wales' 27-23 defeat to France was about Demba Bamba's angle and the right arm of Paul Willemse.
But a bigger moment than those two is alleged to have occurred early in the first half and it was missed by all, including the officials.
As Anthony Bouthier was gleefully gathering a loose ball and cantering his way over for the opening try of the match in the seventh minute, something happened in backplay.
Wales retreated under the posts but second row Jake Ball was furious.
At the final ruck before the try, Ball is stopped in his tracks as he spots something and points at the breakdown.
"We've had a punch thrown, sir!" protested the bearded lock, after Bouthier scored.
He repeated the phrase to referee Matthew Carley as he gestured to punch himself in the face. He then turns to Alun Wyn Jones and protests.
The Wales skipper has a word with assistant referee Wayne Barnes as Romain Ntamack clips over the conversion.
Minutes later, when Carley and Ball were near each other during a break in play, the referee says: "If we've missed something, I can't go referring it."
Ball is agreeable but Wales clearly felt a huge incident was missed.
To his credit, after Dillon Lewis' try in the 48th minute, France captain Charles Ollivon was protesting about something and Carley repeated: "On your request, I cannot go to the TMO."
JOSH ADAMS' ENERGY
What became apparent throughout the afternoon is that wing Josh Adams has become one of Wales' most vibrant sources of energy.
Before kick off, he was slapping the back of skipper Jones and Nick Tompkins, offering words of encouragement and geeing them up.
He bounced around the pitch throughout and was at the heart of the niggle late in the first half.
A nudge in the back of Teddy Thomas riled the French winger before Virimi Vakatawa became incensed when Adams raced over to get the ball off him to take a quick penalty. The France No.13 had to be pulled away.
Referee Carley stopped play and awarded a penalty to the hosts and called the Cardiff Blues man over.
"He's getting in my face," protested Adams.
Carley, having none of it, responded: "It would be a real shame if you were to give me reason to reverse the penalty down here.
"Please stop your behaviour, that is not appropriate."
ALL EYES ON THE SCRUM
The build up to the game was dominated by talk of the scrum. Wales' set piece had been hit and miss in the games against Italy and Ireland but they were adamant they were getting the rough end of decisions from officials.
Throughout the match, Carley was constantly communicating with players, delivering messages before setting the scrum.
Wales were constantly barking phrases of positive reinforcement at scrum-time.
Before the pivotal series of scrums near the end of the match, a Welsh voice can be heard shouting: "They're trying to make a mess here. Don't let them make a mess."
After Bamba was awarded the crucial penalty, Rob Evans protested: "He's gone straight across."
In the post-match press conference, head coach Pivac agreed.
AN UNHEARD TOMPKINS CALL
Early in the second half, Wales had miscounted at a lineout and powerful French No.8 Gregory Alldritt was left unmarked, lurking in the French backline.
Centre Nick Tompkins identified this and was screaming at his forwards for someone to drop out of the lineout.
He couldn't be heard over the deafening wall of noise coming from the crowd. He barked the message to fly-half Dan Biggar but it was too late.
The lineout was won and the ball spun to Alldritt. Biggar raced out of the defensive line to close the space, Hadleigh Parkes following him, and initiated a huge contact with the No.8.
With the help of Justin Tipuric, Biggar held up the Frenchman and won the turnover. Tompkins raced in to pat his fly-half on the back.
A COLOSSAL SHIFT FROM THE CAPTAIN
Then there were the usual sights and sounds away from the ball.
Wales talisman Alun Wyn Jones put in a typically energetic shift, the kind of effort that defies his age.
In the first half, he was the man chasing down a lost cause after a kick had trickled just into the French in-goal area.
After a French try, he was the man attempting to charge the conversion down and was the first one ready to chase the kick off that was to follow.
After Dillon Lewis' try, he was the first man back ready to receive the French restart. He set standards all across the field.
NO. 9 ORDERS AS TEMPERS FLARE
When Tomos Williams came on for Gareth Davies, he made his voice heard.
In the 58th minute, for a number of phases, he was barking at his forwards: "Get off the f***ing line."
A full-blooded affair took its toll on the players at times. Leigh Halfpenny, winded from an aerial collision with Alldritt, had to crawl out of Biggar's way as he dinked a chip in behind in the 34th minute.
Halfpenny was on all fours as he waited for the pain to pass. He received treatment for a full three minutes before gingerly getting back to his feet, strapping his scrum cap up and playing on.
One of the game's final controversial incidents was when Willemse knocked the ball down in the tackle.
Opinions have been divided about whether or not there was a case for a deliberate knock-on but it wasn't given. Referee Carley deemed it to be a debatable incident and went with his assistant Karl Dickson's decision of just a knock on.
Tempers flared after the match when Dan Biggar was upended on the final whistle and a sizeable melee ensued with substitutes running on.
It took a few minutes to cool down but, eventually, it all ended with handshakes.
