1. secures control of the ball in his hands or arms prior to the ball touching the ground; and
2.
and
touches the ground inbounds with both feet or with any part of his body other than his hands;
3. maintains control of the ball after (a) and (b)
have been fulfilled, until he has the ball long enough to clearly become a runner. A player has the ball long enough to become a runner when, after his second foot is on the ground, he is capable of avoiding or warding off impending contact of an opponent, tucking the ball away, turning up field, or taking additional steps
As I said previously, even according to an interpretation of the rules in 3, Dez caught it. Dez held it long enough to become a runner due to all of the football moves he committed already discussed ad nauseum that indicated he was not bobbling the ball but clearly in control of it.. The phrase “going to the ground” doesn’t nullify possession just because the ball touches the ground, because possession is determined distinct from it via those qualifiers. The ball moved from his arm not because Dez didn’t have control of it, but because the momentum of how he caught it and the football act of him lunging and his arm holding the ball with only one hand reaching for the goal line and hitting the ground caused it to.