Smudge,
I don't ever recall the deflector doors being used for tailgate parachuting (SL or FF) The star jump pic is probably a Static Line Square most likely the BT80 if post 2000.
VX275 is probably best place to describe the benefits of the deflector doors in AA62s absence. He probably did the early trials.
Understand tailgating from A400M is worse than anything we have known before.