For my understanding, the red bar with "<any app> (recording)" indicates that the mic is active in the background.
Means the user should to be aware that an app (like Skype or others) is active in conversation during working with other apps in parallel. So the user will not forget to switch of before talking about important company or family secrets :)
Apple Support should write an official statement, that this (little misleading) term 'recording' is not really recording conversations on iPad. Better would be 'Mic active' instead, because red bar is alert enough.
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Dear Apple Support,
Please confirm that 'recording' in this context is just for user awareness and has nothing to do with international security organizations or data security violation from app providers.
Furthermore a better term would be nice in the next service pack ;)
Thanks for 'recording' this issue.