Antonio Conte and Jose Mourinho will come face-to-face for the first time since their bitter war of words erupted last month when Manchester United host Chelsea at Old Trafford on Sunday.
Tensions had simmered between the pair since Conte's appointment as Mourinho's long-term successor at Stamford Bridge in 2016, with the Portuguese's proximity as a direct rival at United never likely to encourage detente.
Here, we have a look back what both men said and how the row rapidly escalated.
Prelude - Defensive teams and Mourinho seasons
Last season's jibes, as Chelsea marched to the Premier League title and United collected the EFL Cup and Europa League to compensate for a sixth-place finish in the top flight, amounted to a sparring, as opposed to an all-out verbal scrap.
The seeds were sown when Mourinho complained to Conte about his animated celebrations on the touchine – more on those later – as Chelsea thrashed United 4-0 at Stamford Bridge in October 2016.
4 - Conte is the 4th manager to lift the PL trophy in his 1st season in England (Mourinho 04-05, Ancelotti 09-10, Pellegrini 13-14). Impact. pic.twitter.com/RBxKNVzMuP— OptaJoe (@OptaJoe) 12 May 2017
Mourinho's favoured method of damning with faint praise was to the fore last February, when he labelled the Premier League's leading side "a very good defensive team", while Conte warned Chelsea to avoid "the Mourinho season" this time around – a handy shorthand for the perils of a dreadful title defence, such as the one endured at Stamford Bridge in 2015-16.
By last October, Mourinho suggested Conte was one of his rivals who, "they cry, they cry, they cry when a player is injured". In the Italian's opinion, the United boss was overly concerned with matters at his former club. The stage was set.
"I don't behave as a clown on the touchline"
While offering assurances over his United future on January 4, having appeared increasingly morose around matches, Mourinho identified an aspect of his behaviour he believes sets him apart from his colleagues.
"Because I don't behave as a clown on the touchline it means I lost my passion?" he said. "I prefer to behave the way I am doing it, much more mature, better for my team and myself.
"You don't have to behave like a crazy guy on the touchline to have that passion."
Mourinho could arguably have been referencing Conte, Pep Guardiola or Jurgen Klopp. All three men were asked about his comments; only one took the bait.
Conte says Mourinho has "Demenza Senile"
Speaking a day later on January 5, Conte was quick to accuse Mourinho of hypocrisy in a rather eye-catching manner.
"I think that he has to see himself in the past, maybe he was speaking about himself in the past, yeah?" he said.
"Maybe sometimes, I think that someone forgets his behaviour and sometimes I think there is, I don't know the name, 'demenza senile' when you are a bit... when you forget what you do in the past."
Despite the literal translation being "senile dementia", Chelsea were forced to clarify Conte had been searching for the Italian word for "amnesia".
Either way, this was now an argument in the gutter. Mourinho seemed happy with that state of affairs and was determined to hit Conte where it hurt most.
Mourinho refers to Conte's suspension for match-fixing
Responding after United's 2-0 FA Cup win over Derby later that day, Mourinho set Conte up with faux-sympathy and empathy – this is all the media's fault, you see – before concluding with a non-veiled dig
"Look, I don't blame him. Honestly, I don't blame him," he began.
"I think the press should apologise to me and to him because the question that comes to him is completely wrong and because of that he had that out-of-control reaction. But I don't blame him at all."
There followed apparent contrition for past indiscretions. It was all an elaborate set-up.
"The only thing I want to say to end the story is that yes, I made mistakes in the past on the touchline," Mourinho added.
"Yes, I will make less, but I think I will still make a few. What never happened to me and will never happen is to be suspended for match-fixing. That never happened to me and will never happen."
Conte was implicated in a 2011 scandal while in charge of Siena and later served a four-month ban, but always denied any wrongdoing and was acquitted by an Italian judge in May 2016.
Conte with a final dig at the "little man with a low profile"
Conte had spoken previously about his personal ordeal throughout the match-fixing affair. Following Chelsea's 0-0 FA Cup draw at Norwich City on January 6, he was understandably in a barely concealed fury.
"I consider him a little man, I consider him a man with a very low profile," Conte said of Mourinho, before airing a recently learned word.
"You have to know the story very well before hurting another person. In the last period, he's suffering a bit of amnesia."
Conte went on to lambast Mourinho for his criticism of Claudio Ranieri before last season seeking to show solidarity with the deposed Leicester City boss.
"I remember for example, a stupid example with Ranieri, when he offended Ranieri for [the standard of] his English," Conte seethed. "Then when Ranieri was sacked he put on a shirt for Ranieri. You are a fake.
"If you want to fight a person, you try to kill the person, and then after two years you try to help this person, because maybe it's good for you, your profile."
Contempt and no regrets
In the days following FA Cup third-round weekend, Conte underlined that he had "no regrets" over the episode. "He said serious words and used serious words. I won't forget this," he said.
Mourinho then told reporters in no uncertain terms that he had "contempt" for Conte, as a dubious means to draw a line under the issue.
All eyes on the dugout, then, at Old Trafford this weekend – a prospect Conte was already eyeing as he glowered at Carrow Road.
"Me and him, face to face," he said of the coming Premier League match. "I'm ready. I don't know if he is ready."