So, back to the topic
I am still undecided whether to choose the option with a second zone or the wireless option.
I have the following questions:
Zone 2: Is simultaneous output of one music source in Zone 1 and Zone 2 possible? Or only "either/or" or two different music sources?
(Example Yamaha RX-V779)
Wireless: I have taken a closer look at the variant with network speakers. (Example Yamaha RX-V479).
Here the similar question: Is simultaneous output of one music source in 5.1 and via network possible? Is the music output synchronized? Since the dining area is audibly next to the 5.1 zone, a time delay would be annoying.