Thrown ball INT ??

[CecilOne]

I know we have discussed this before, but a new example, just to clarify.

Bases loaded, batted (bunted ?) ball along 1st base line, fielded by F3 in front of 1st; who throws home for the force.
BUT, the throw hits the BR, deflecting the ball.

1 – Is it INT?
2 – If it is, why not INT whenever a throw hits a runner?

Primarily an ASA question; please add what you want about NCAA, NFHS or other differences.