Here is a quiz that Bharath has written. Very relevant.
Engineers Architects are trying to wriggle out of their responsibilities by stamping “VIEWED” or “No COMMENT”. They do not want to stamp approved for fear of any error in the document could come back and bite.
Insurance companies on the other hand are trying to minimize their risk when they provide insurance to detailers by explicitly stating, they will not cover the detailer unless the drawings are stamped for approval by the engineer and architect, and anyone else.
To cut the discussion short, if the detailer issues without approval then the detailer will put everyone at risk because there will be no insurance cover. Detailers are the smallest in the chain. Try to litigate against the detailer is unlikely to get any good result. They could simply windup.
Now here is the quiz
https://docs.google.com/forms/d/e/1FAIpQLScspZzCdNBlwVb4FJcB3rUebNuaZHBk28goPcUBHGFXz-aQiA/viewform