Yes. In HOI2 the AI never declared war if the country they were guaranteeing the independence of was "out" of the game.
It would be claryfing to know if in this AAR, Albania was just occuppied and not annexed, in order to produce a delcaration of war from Italy.
If it's the case, then GOI work the same way as they did in HOI2.
If Albania was annexed by the time Italy dow'ed... now we are rocking!
Albania was not annexed until after Italy declared war.