Riders descend one at a time, separated by ~30s starts; Single seeded qualifying run; finals = fastest qualifiers in reverse order; Fastest aggregate time wins
Why people argue about this
People often assume that in a Time-Trial (DHI) race, all riders start at once with no breaks between them, which leads to misunderstandings about how their individual times are combined into an overall winner. However, the true rule is that each rider starts individually after a 30-second interval, and their fastest lap time determines their place in the competition.