The outer glass is basically only to run windshield wipers and to give a scratchproof surface - it depends on manufacturer but can be as little as 1/8 of an inch thick.
On 747 the procedure is to remove the cracked outer glass before departure.
747 #1 window, the procedure you refer to is for only 1 brand of window fitted to the 747 ("Triple X" I think). From memory to define the serviceability of the window required for dispatch revolved around visual impairment caused by the damage and structural security, whether arcing could be seen inside the window and the window heat was functional.
If any or all of these defects presented after a bird strike in flight, what would be the action?
Continue/return to an airport where these defects would cause the least issues? e.g avoid ice/rain conditions if avail.
Or fly on as 1 windscreen is serviceable ?