Singapore’s largest active Covid-19 cluster: What went wrong at Changi Airport?

I don’t know what is the point of this story beyond saying

inevitable virus spread here and thank goodness, got vaccine or infection could be worse. Actually I expected a blow by blow on who got it first and where and how it went to the next person at which part of airport. Some kind of narrative which will show speed and breadth of spread. The article doesn’t answer question in the headline.

PS. There is a side story on how it began and it is really only just how it began…