When Diogo Dalot fouled Noni Madueke in the final moments of eight minutes of added time, the visiting team was on the verge of securing three points.
Cole Palmer then sealed the win by scoring from the penalty spot, followed by a deflected goal off Scott McTominay’s leg in the 111th minute.
Despite taking a 2-0 lead through Conor Gallagher and Palmer, Chelsea saw their advantage slip away as Alejandro Garnacho and Bruno Fernandes leveled the score just before halftime.
Garnacho added another goal in the 67th minute, setting the stage for the dramatic late-game events.
After the final whistle, Erik ten Hag bypassed a handshake with Mauricio Pochettino, opting instead to head straight to the tunnel.
His reaction reflected his dissatisfaction with the decision to add eight minutes of stoppage time and hinted at his disappointment with his team’s performance.
Critics have targeted the Dutch manager for his failure to address recurring mistakes that have led to significant losses for his team this season.