It's like a tradition to see this scenario of Madrid derby where Real score drawing goal in last minutes of the game against Atletico. I bet that La Casa Blanca will win this match since in the other hand Atletico lost many hope while they could end the match in several chances but they didn't do and now they are paying for it
This is what happens when you don't tighten your defense to prevent the opponent from passing through until the referee blows the final whistle. The game is now in a new phase, with Real Madrid putting a lot of pressure on Atletico Madrid. When Real Madrid scores a last-minute goal, they usually win the game. If Atletico Madrid allows Real Madrid to pass through like this, I'd rather call the team a weak one.