Guinness Open Gate Old Stock Ale

This beer says it is a blend of barley wine and imperial stout, but RB calls it an Old Ale:

https://www.ratebeer.com/beer/guinness-open-gate-stock-ale/788168/98012/

Thoughts? Should this be changed to ASA?

Usually barley wine and imperial stout blends are under ASA.

Tastes like an old ale.

That’s a tough one. I think ASA makes sense as a catch all, but it does taste like an old ale.

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Possible it could rate as an old ale if one of the two beers was new high alc and the other older . But that is a stretch.
Is there any real hard and fast rules for the types of beers used to make an Old Ale traditionally?