One of the games that are difficult to predict who will win because both are great teams and they both have a winning mentality. If we look at their performance in their respective leagues, Chelsea is slightly better than Real Madrid, which they have always won in their last 5 matches, while Madrid won 4 times and in their last match they had to lose to Barcelona. In the first leg, I think Chelsea will be slightly above Real Madrid because they are playing at home.
The hosts' lead looks set to make Chelsea even more motivated to win the match against Real Madrid, but still I think the odds are 50:50 for them to qualify for the semifinals. In a few seasons the English team looks stronger in the Champions League where Chelsea, Liverpool, Manchester City can get into the semifinals and even the final. Real Madrid won't be my favorite this season considering they don't look ready for a stronger opponent when the intensity of the opponent's attack is better than theirs. Real Madrid's defense is not good, we can see in their last match vs Barcelona.
Real Madrid can always make a surprise when competing in the Champions League stage, even though they are not in good form when playing in the domestic league.
Real Madrid has a very good mentality and is also passionate about playing in UCL matches because they are the kings of UCL who won the most Champions League trophies of all time.
while Chelsea is also in the same mentality as Real Madrid, because Chelsea was the champion of UCL last season, the match between these two teams is very balanced, both have almost the same quality but I think after seeing Real Madrid's match that beat PSG, i believe it's Real Madrid would be able to do the same with Chelsea. I'm even sure that Real Madrid will be able to go further on the UCL map this season, maybe even reach the final or become champions.