Aston Villa were infuriated after Manchester City's controversial first goal on Wednesday was allowed to stand despite strong appeals for an offside.
Bernardo Silva broke the deadlock in the 79th minute at the Etihad but profited from Rodri, who burst back into play despite being clearly beyond the backline, interfering and teeing up the strike.
Boss Dean Smith was dismissed from the touchline after loudly complaining against the decision - and even BT Sport's pundits were left bemused by the chaos.
All eyes on Man City's first goal.