Can you pick up a 920 while it is playing music over nfc?

I'm not too well versed on the physics behind NFC. To the best of my knowledge wireless charging is extremely short range, so picking up a phone even a few inches off the announced wireless doc will stop it charging. But how far away will you be able to get it before it stops playing music over NFC on the wireless charger/radio combo they've shown? Obviously it would be nice to be able to pick up the phone from the dock while it is playing music, change songs, and put it back down without it stopping. Can anyone out there with experience give me a rough estimate of how close you need to get things together for NFC to work? Is it measured in feet, inches, or fractions of an inch?