But it was another clash in the opening 45 minutes that got everyone talking.
"Accompanied after the game by manager Sam Allardyce and director of football Steve Walsh, Holgate complained to Madley that Firmino had used the word "negro", wrote Lawton.
TV images appeared to show Firmino calling Holgate a "filha du puto" - Portuguese for "son of a b****".
Madley had to separate the pair but did not book either player at the time.
However, the FA have since opened another investigation with Holgate at the centre of attention.
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The England Under-21 global deleted his personal Twitter account following the defeat to Liverpool amid the accusations and he could end up facing a suspension for them, much like Andre Gray did during his time at Burnley.
Jurgen Klopp admits he was unsure what happened between Mason Holgate and Roberto Firmino in Liverpool's FA Cup win over Everton. But the governing body does not regard that as a defence of the player's conduct or mitigation.
"Holgate's age at the time is likely to be used in his defence, as he was 15 when the first two tweets were sent and was still three months short of his 17th birthday when the final one was posted". However, Holgate had already been part of Barnsley's academy for a number of years and would have received education on social media and diversity.
In 2016, then-Burnley striker Andre Gray was suspended for four matches for tweets sent from his account from roughly as far back as Holgate's.
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