Can I play GRAB + DISARM as an immediate defense to a CHUNK played on me, or must I do this on my turn?
The rules are confusing because they seem to suggest that a GRAB can only be played out of turn if preceeded by a BLOCK (e.g. you JAB me, I BLOCK, then GRAB). Since CHUNK cannot be BLOCKED how can a defending player play GRAB, then DISARM?
I like to think of Chunk as a combtant who grabs a handfull of stones and then start hurling them.
You cannot block any one single thrown object (and therefore cannot use disarm as a defense in this case). It's a missile weapon, afterall, and the object has already left their hand.
Grab + Disarm is the act of stepping up and knocking away the combatants stash of rocks, therefore removing their ability to throw in the future.