Thread:Pauolo/@comment-17194369-20170630214604/@comment-1500935-20170705182715

I found the way to trigger the scene, and an explanation why it's easy to miss. You first need to try to open the locked gate to the Legal Plaza. This is the only way to trigger the quest where you need to look for the key, and so the scene. Daud will even have a comment after finding Chauncy's hat.

Since that gate is far back in the level, I guess that those who usually take time exploring find the key before even needed it (meaning starting the quest). I guess it's something the developers overlooked, because exploring first means the hat is pointless.