[glennon]

There is a FAQ at: https://www.ycombinator.com/demoday/faq/

Each startup gives a two to three minute pitch with slides, one pitch after another. No questions. They have 15 to 30 minute breaks every 20 pitches or so.

Investors can express interest via a web app, and meetings are set for later. It is also possible to talk to founders during the breaks and in the hallway.