I do not think that Atletico Madrid will pass Barcelona, that would be a bit too much. I get how it looks like Real could do that, it's clear that Barcelona had a bad period and they are hoping to get better results, but it would be very very tough for ATM to pass Barcelona, that would require both teams to keep their momentum for a while longer, Barcelona to keep losing or getting draws, and atm to keep on winning more and more, that seems like unlikely if you ask me but of course it's football, anything could happen.
Nothing is impossible in football, unexpected things can happen during the 90 minutes of play. Although Barcelona has always managed to win over Atletico in the last four meetings, it does not mean that this season Atletico does not have the ability to beat Barcelona, especially in the last three matches in La Liga Barcelona has only managed to win 1x, draw 1x and lose 1x. This season Atletico's performance is much better than the previous season, so far they have achieved 9 consecutive wins in all competitions, Barcelona must work hard if they want to beat Atletico.