Yet the pain of a European exit and a defeat at Wembley will soon be forgotten should the Reds get the job done in the Premier League.
Barring a dramatic collapse Liverpool will be celebrating a 20th league title in May. The pyro will be red and the party will be pandemonium.
There is still a little bit of work to do first, though, starting with the visit of neighbours Everton.
The wounds are still healing from a fiery final derby at Goodison Park in February.
That ended in a 2-2 draw, although it has not really put the brakes on Liverpool's title charge. Realistically, more dropped points tonight would not be catastrophic either.
Even so, Slot held a meeting with his players on Sunday to reaffirm that putting in a shift is non-negotiable.
At times in February, Everton outmuscled them and Slot will not tolerate a repeat of that at Anfield.
The Reds head coach said: “The message is as simple as it has always been - don't accept you are outworked by a team, which we were against Newcastle.
“If the stakes are so high, that is almost unacceptable, almost. It can happen in a season once or twice but it shouldn't happen many times. [I told them to] show the work rate they have put in for so many games in a row.
“Paris Saint-Germain was a great example of that [work rate]. So maybe, maybe, maybe I made the biggest mistake by not rotating enough [for the Carabao Čup final]. But I thought there were four days in between for Newcastle, they had enough rest but again it is too simple to only say we...