Once I create it, it's there and it remains there until destroyed, so yes, it's kind of "passive". And you are free to perform your own techniques simultaneously since we both have separate chakra systems. This means short in every direction or mid in diameter, if it makes it easier to understand. As every other summon, I am limited to 4 turns.
Well, I talked about it with Scorps, and unfortunately, the flapping of my wings isn't strong enough for techniques. Yes, I can flap if you want just to make your technique look cooler, but it won't really do much. Chakra transfer? Nah, I can screech every genjutsu right out of your ass, don't worry.