Jurgen Klopp and Sean Dyche got involved in an angry exchange of words on the stroke of half-time during Burnley's shock 1-0 win against Liverpool at Anfield on Thursday.
After a largely uneventful goalless first-half, things got heated between the players on the pitch when Fabinho and Ashley Barnes challenged for an aerial ball.
Fabinho appeared to aim a kick at Barnes, and it sparked something of a melee between the two sets of players.
The Brazilian was shown a yellow card, but a VAR review checked a possible red, and this drew Klopp back out from the tunnel, where he had been heading to address his players during the break.
Dyche could then be seen saying something to Klopp as he himself made his way to the dressing room.
Klopp did a double take before turning around and angrily pursuing Dyche, waving his arms and gesturing angrily.
Dyche fired back before eventually making his way down towards the changing rooms, leaving a seething Klopp behind him.
The decision was not overturned to a red card, but it certainly livened up what until that point had been a rather dull encounter.
After the encounter Klopp brushed off the exchange as "nothing", but Dyche said: "You know when we come to these places, we are allowed to actually fight and are actually allowed to try and win. That's all it was.
"It was nothing out of the normal - just two managers fighting to win a game. There's nothing wrong with that."
This is not the first time Klopp and Dyche have clashed, and they have a bit of previous relating to a match between the two teams back in 2018 at Turf Moor.
The duo shook hands at full-time of Liverpool's 3-1 victory, but Dyche said something to Klopp which stunned the Reds boss, the Burnley chief scolding the German over some of his actions during the game.
Dyche took exception to Klopp's complaints to the fourth official, and the pair becoming involved in a heated discussion, exchanging views with the home boss furious with Klopp calling for his players to be carded for challenges and perceived attempts to influence the officials.
Dyche has also recently disagreed with Klopp's strong views that five substitutes should be allowed in the Premier League rather than just three this season.
All things considered, it does not seem likely they shared a glass of wine at full-time at Anfield.