well that and the fact that it's not an accurate representation of that play lol
Allen feels protection breaking down and starts sliding into the throwing lane
when he lets the ball go Diggs is making himself a target and showing him his numbers at the marker like you're supposed to
Davis hasn't even turned his head yet and instead ducked behind the DB, he's just not an option there
the beauty of Diggs and Allen chemistry is understanding what's going on wrt pass pro, down/distance, and a whole range of little things that engender that kind of trust as a target...Allen rightly doesn't have that level w any of the other guys