Around one hundred media representatives had packed a cramped room in the Olympic Sports Centre - which was itself only utilised as a back-up option due to the sorry state of the pitch at the nearby Bird's Nest Stadium - resulting in United media staff deciding to move the media briefing outside. It was too busy and too hot. Ultimately, too popular.
Pep Guardiola will not care that his earlier conference was attended by a smaller number of media. He was not fazed by the pulling of Real Madrid during his time at Barcelona, either, and ultimately these things do not matter.
But it goes to show that these two old foes will be thrown into the same spotlight sooner than they would have anticipated, and perhaps liked.
For both United and City, who meet in the International Champions Cup in Beijing on Monday, it is an opportunity at least to get a good idea of where exactly they stand with less than three weeks to go until the Premier League begins again.