Can Bayern Munich stop Real Madrid? Can they stop them at least from scoring?

Real Madrid and Bayern Munich are meeting later today in Champions League semifinals second leg. Can Bayern Munich become the first team since Juventus in 2015 to stop Real Madrid? We have found two statistics that will surely make Germans worry. But there are two more statistics that may prove Real Madrid will surely play in the final.

1. Real Madrid scored in the last 41 UCL matches in Santiago Bernabeu. It’s hard for many people to remember which team was able to keep clean sheet in Madrid. It was Barcelona in 2011 that won 2-0 in Santiago Bernabeu
2. There were only two teams in the history of the league, that managed to go through the next round after losing first leg at home.

Being unbeaten in a single season. Can Barcelona do it? What teams have done it during the history of top-5 leagues