Alien: Development of destruction of the Nostromo via The Pink Panther Strikes Again

leading from

Alien: Development by way of the Pink Panther movies? 

a) At the end of The Pink Panther Strikes Again (1976), the castle containing the doomsday weapon is destroyed by this weapon, and perhaps this would become the scene in which The Snark (later named the Nostromo) is set to explode..

b) The Nostromo explodes in the distance as the Narcissu escapes