It seems to me that ben’s hands only comes up to shoulder level according to a vidcap posted on this site. Charlie has said many
times that the hands come up to face level but in ben’s case he might not need his hands as high up because of his superior strength.

Another action I noticed was his hands moving almost directly to the center of his body. As an athlete I was wondering if my hands should be visible directly in front of my face and stays at 90degrees in the front swing?

That was at the end of the race when he was shutting down. Sorry, my fault.

Ben actually used his strength by using his arms to their full effect.

The hands move to the centreline to provide more hip rotation and thus more stride length.

Does the hands cross toward the face without crossing the certile of the body?

(center line of body)-edit