The game began at a furious tempo, with Barcelona striking first through Lamine Yamal, who finished a slick attacking move involving Ferran Torres to give the visitors early control.
Barcelona doubled their lead when Dani Olmo threaded a pass to Ferran Torres, who produced a brilliant curling finish into the top corner, putting Atletico under serious pressure.
However, Atletico hit back before halftime. Antoine Griezmann orchestrated the move, releasing Marcos Llorente, whose delivery allowed Ademola Lookman to finish and make it 2–1, shifting momentum back to the hosts.
In the second half, Barcelona thought they had extended their lead through Ferran Torres again, but the goal was ruled out for offside. The turning point came late when Eric García was sent off after a VAR review for a foul on Alexander Sørloth.
Down to ten men, Barcelona could not hold on under intense pressure, as Atletico managed the closing stages to secure qualification and complete a dramatic comeback across both legs.