rule text
Article 3. Completed or Intercepted Pass. A player who makes a catch may advance
the ball. A forward pass is complete (by the offense) or intercepted (by the defense) if
a player, who is inbounds:
(a) secures control of the ball in his hands or arms prior to the ball touching the ground;
and
(b) touches the ground inbounds with both feet or with any part of his body other than
his hands.
. . .
If the player loses the ball while simultaneously touching both feet or any part of his body
other than his hands to the ground, or if there is any doubt that the acts were simultaneous,
it is not a catch.
Item 1: Player Going to the Ground. If a player goes to the ground in the act of
catching a pass (with or without contact by an opponent), he must maintain control
of the ball after he touches the ground, whether in the field of play or the end zone. If
he loses control of the ball, and the ball touches the ground before he regains control,
the pass is incomplete. If he regains control prior to the ball touching the ground,
the pass is complete.
six ways from sunday it was a catch per the rules.