#1 Liverpool's potency in front of goal in the first half
In the first half, it was clear that Norwich weren't holding back and were looking to attack. They did create some decent opportunities too, but Liverpool were very clinical with the chances they got, especially in the first half. Aside from the first goal, every other one was brilliantly finished.
Mohamed Salah's first goal of this season - and Liverpool's second on the night - was a classic case of efficient finishing. The Egyptian was found by Firmino in a very tight corner and Salah showed his quality by taking a touch and placing it into the bottom corner.
Liverpool's third from Van Dijk was another great piece of work as the Dutchman headed it downwards and into the back of the net.
Also, Origi's finish wasn't easy at all as he received a cross from Alexander-Arnold almost at the edge of the box, and smacked it in with a first-time header.
Basically, the Reds sealed the game in the first 40 minutes and from there on, it was all about saving energy.