In testing out some DC20 this past summer, my party started the Dragon Heist adventure book. I converted Chapter 1 into DC20, used a lot of Party Challenges to shorten the amount of time needed to run through the entire Chapter and the party finished it in about two 4 hour sessions. Here are my notes for it:
NOTE: We stopped the game because summer came to an end, and you will need familiarity with the Dragon Heist book and story to run this, these are just my bare-bones GM notes.
Enjoy!