The throw almost didn't get there, and it didn't get there in relation as it should have for the route that was run. In his effort to put "touch" on the ball Dak created a situation where the receiver had to at least stop, and maybe even come back a step or two to get the ball. With a man running a route into the end zone the QB has to get the ball to him - get the ball into the end zone. And, of course, the natural tendency for the receiver in that situation is to let the ball come to him in the end zone for the TD rather than to have to step back out of the end zone to get the ball - not to mention that his momentum is already working against him having to come back for the short soft toss. All that said, the ball was thrown so soft, the receiver should have recognized it, and even if he had to step out of the end zone to catch it, that's what he should have done. Bottom line is it was a screw up at both ends.