When Liverpool managed to wrestle back control of proceedings against Inter Milan in midweek, it came from a treble-substitution on the hour-mark.
There Jurgen Klopp threw on Jordan Henderson, Naby Keita and Luis Diaz to turn the game in his side’s favour.
The German was at it again against Norwich City on Saturday, though this time he only needed the two changes. And this time it felt rather different.