There was a key three-minute spell early in the second half of Wednesday's game that ultimately went a long way to determining the outcome.
First Gabriel Martinelli embarked on a magical run on the left wing, beating three players, only for his cutback to fall to a yellow shirt.
Then Martin Odegaard saw his shot saved at close range by Alisson after a loose backpass presented the ball to Alexandre Lacazette.
The misses proved costly. Within moments Liverpool opened the scoring through Diogo Jota, and once ahead, they didn't look back.
After the game Mikel Arteta was left to rue those close margins.