Liverpool is still unbeatable, they won in their last 6 CL matches, and Origi probably scored his first goal in the Champion League this season yesterday in their game against AC Milan. Milan performance so far in the Champion League have been poor, they were only able to win 1 match, while they lost 4. Winning the game against Liverpool could have given them the opportunity to play in the Europe League. Although, it seems their focus have been mainly on their Serie A matches. However, this is the end of the road for them in the Champion League.
Milan's performance has been poor since the start of the Champions League. They have won just one match. However, their performance in Serie A is very good. Their main goal is the Serie A title. So in the Champions League matches, they did not form a team with any different strategy. They didn't think the Champions League matches were important. Seeing their performance, it seems so.