Barcelona coach Ronald Koeman said he cannot understand how Real Madrid avoided conceding a crucial late penalty in their win against Eibar.
Zinedine Zidane's side clung on for a 3-1 victory after Lucas Vazquez's stoppage-time strike clinched all three points at Municipal de Ipurua.
Karim Benzema and Luka Modric had fired the Spanish champions into a two-goal lead inside 13 minutes before Kike hit back for the home side before the half-hour mark.
Eibar were pushing for a late equaliser when the hosts had appeals for a penalty turned down after the ball appeared to strike the arm of Sergio Ramos inside the penalty area.
Eibar head coach Jose Luis Mendilibar fumed about the incident, which was not reviewed by referee Jose Luis Munuera Montero.
Madrid's fifth straight win in all competitions left them level on points with Atletico but Koeman hinted Los Blancos were fortunate.
"The day of the Madrid match, I said something that doesn't need to be repeated," Koeman said.
"I think there are things that cannot be understood. I'm sure that if you ask 10 people if yesterday's game is a penalty, nine will say yes.
"The referee and his team have decided not to call it. But, well, we know."
Following Barca’s 2-2 draw against Valencia at Camp Nou, Koeman’s side sit fifth in the LaLiga table, eight points behind Atleti and Madrid.
The Catalans face 18th-placed Real Valladolid on Tuesday at Estadio Jose Zorrilla.