Nice find by Derick Okihara, writing for AFP548:
In addition to bonjour negotiation for AirPlay, iOS 7.1 devices
will also look for AirPlay sources over bluetooth when doing it’s
scan! This means you do NOT need bonjour to AirPlay.
AirPlay is one of the best parts of the modern Apple ecosystem — a complex system neatly wrapped in a simple “it just works” interface.
★ Wednesday, 12 March 2014