I love it!
The box looks like it's at the A-40. The "receiver" (!) catches it while airborne at the A-39... but when he lands, the ball might or might not be juuuust over the A-40.
A kick continues to be a kick until it is caught or recovered. That means it's a kick until the Team A player lands with it. If he lands with the ball beyond the NZ, then the kick has crossed the NZ and it's dead when caught, i.e. when he lands.
Trick plays demand the highest degree of scrutiny. So if the wings are sure that the ball crossed the NZ, by even a little, they should so rule. On the other hand, if they aren't sure, I feel like Team A should get the benefit, trick play or not. Especially since I love this.