"To get that first goal was important and helped us out and gave us confidence in the game."
Kova opened the scoring for Chelsea with a brilliant left-footed finish.
Gallagher then reflected on his first Champions League start.
"Really proud moment, I wanted to give a good performance and get the win which was the most important thing," he said.
Conor was one of the best players on the pitch today, bossing the midfield together with Kovacic and Jorginho.
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