O'Neill made no tactical adjustments at half-time.
Originally, O'Neill's instinct was to hold the line—keep the players sitting deep, stay compact, and wait for Barcelona to commit men forward. But before he could settle on that approach, Mourinho suddenly broke the silence.
"No," he said firmly. "We attack. We press—now."
By now, their team had become adept at reading the flow of a match, shifting shape and tempo with nothing more than a glance or a gesture from the touchline. They knew what to do.
The only change came with Neil Lennon, who was replaced by Frank Lampard.
Barcelona had been under heavy pressure in the first half, and Mourinho saw no reason to disrupt City's rhythm with unnecessary tinkering.