The draw achieved by Barcelona made their points not make the gap wider, now they only have a 2 point advantage over Real Madrid. However, Real Madrid still has 1 match left which if they win it will shift their position to Barcelona. There is a problem faced by Barcelona at this time, from the last 5 matches they have only been able to win 1 match, 2 losses and 2 draws. That's what finally made them increasingly approached by the teams below them, precisely 2 competitors who are always in La Liga, namely Real Madrid and Atletico Madrid.
Maybe we will still see Real Madrid winning the La Liga title, slowly Real Madrid is starting to play better and with the use of the upcoming transfer window which will soon open, it could make it easier for Ancelotti to bring Real Madrid to the top and defend the title.
Even if Atletico Madrid can continue to play stably and more consistently then they also have chance to surpass Barcelona, I sure Atletico Madrid will not be able to win the title this season but they are dangerous and can make it difficult for anyone who wants to compete for the title, at least Atletico Madrid will be competitor that makes La Liga more competitive.
While I do not want to say that Real Madrid isn't playing good, I wouldn't say they are playing bad neither and they are doing just fine. If you ask me the main reason why they are getting close is because Barcelona has been shit for a number of weeks now and that's the reason why real got this close. Obviously Real Madrid is still a good team in the sense that they are fighting for a title, and why wouldn't they, they are one of the two big teams there, but if Barcelona didn't fail to win, and like this past six games were all wins, just like how they did at the start of the season, then we would have a situation where they would be 10+ points ahead already.
But because Barcelona played horrific, that meant that whenever Real Madrid lost points, like for example to bilbao, that still didn't mean anything because Barcelona would in return lose points as well so that would allow Real Madrid to be always on the chase and that is how they are close to top now.