Liverpool boss Jurgen Klopp, speaking to BBC Sport: "I very often forget the result during the game so even though we were 2-0 up I did feel we had to control the game better.
"But then when you step out on the pitch, you realise the wind, so it was difficult to do the right thing in the right moment. We scored two wonderful goals and for sure should have had a penalty but didn't.
"They defended really well and are a good team with quality. We lost a few balls we don't usually lose and Roberto Firmino didn't have much support. It caused a few problems but not too many."
Newcastle manager Rafa Benitez, also speaking to BBC Sport: "We were playing against a dangerous team. We know they have the pace up front. We managed to 40 minutes then it was a mistake.
"We had to go for it in the second half and were then more open. You have to keep the balance to be stronger in the defence and create chances in attack.
"We are learning but we are still making mistakes against teams. We are improving but this team has to get points.
"I am pleased with the fans. The Liverpool fans were really good for me."
Liverpool play FC Porto at home in the Champions League last-16 second leg on Tuesday. They next play in the league at Manchester United on Saturday (12:30 GMT kick-off).
Newcastle's next match is at home to Southampton in the league on Saturday (15:00).