2/10 ball on A's 30yd line.

Snap to A1 who runs left and pitches the ball from A's 27yd line to A3 on A's 29yd line. A3 touches the ball but does not catch the ball. The ball breaks B's side of the NZ and A6 and B4 recovers the ball simultaneously on A's 34yd line.

WM

Lots of red herrings here. Not sure why this would be anything but A's ball. Is this a trick question?

incomplete pass. if i understand it right the pitch was forward from behind the line of scrimmage?

FED Rules
 

This is a forward pass, if the ball hits the ground it is incomplete. If it did not touch the ground, any ball that is simultanously caught by A & B, possession is assumed to not have changed and A has retained possession, although the ball becomes dead when they are both down inbounds in possession.

If it was a grounded incomplete pass it is A's, 3rd and 10 from their 30 yard line. If it was a completed pass (it never touched the ground after A3 muffed his catch, it would be A's ball 3rd and 6 from A's 34.