Default [Q] Can I have WiFi internet when Miracast-ing in CM11?

Hi,

Since kexec kernel for XT910 can't support HDMI for now.
I'm planing to buy Miracast device to display to TV.
But some questions I wish to know in advance.

XT910 / CM11 20140206 nightly / CM11 stock kernel

1. Can I still have WiFi internet connection while Miracast to TV?
2. When display to TV, sound will output to (a) TV only or (b) TV and XT910 both?

Sorry for my English and thank you.
BR,
Chung-Hung Chen
== XT910 CM11 ==