chop block

[secondstar]

Federation Rules I understand the definition of chop block...contact high and then contact low...safety issue...
Question...
Line of scrimmage situation. Guards set a yard to a yard and half away from snapper. After snap, snapper contacts middle defensive guard at or below knee. After initial contact by snapper, right or left offensive guard contacts middle guard above waist on the opposite side of the snapper knee contact side. The contact by offensive guard is a definite delay. Ball is in the zone.
1. Is this legal, since contact was not simultaneous?
2. If this is considered to be a safety issue and legal however, is there anything going on currently to address the chop block rule, to address this potential severe knee injury issue?

[Edited by secondstar on Oct 21st, 2000 at 11:26 AM]