* Hush references Damian Wayne beheading the Spook. This happened during Batman and Son.
* Penguin mentions the Black Mask forcing him to work as an underling, this happened in Long Shadows.
Gotham has changed for us, and for the better. I have made it so. The so-called criminal is no longer relegated to the shadows. He walks openly in daylight and takes what he wants. The innocent cower behind locks that won't save them. Former enemies are allowed to exist, provided they serve us. A fine arrangement, don't you agree?