Two inquiry/DQ questions

[Split Rock]

I am wondering if anyone knows the answer to these two inquiry scenarios:

1) Horse 1A comes out of the gate and completely wipes out horse 1 (other half of the entry) and horse 1 goes down. Horse 1A wins the race. Does it come down?

2) Horse 2 breaks out of the gate and comes over on horse 3, almost knocking the 3 out of the race. However, the 3 rights itself and catches the 2 in the stretch. Both the 2 and 3 duel in the stretch and then the 3 comes over on the 2, knocking it into the rail. 3 wins and 2 runs 2nd. Both infractions warrant a DQ. How is it handled?