True, Alan doesn't press the point, and only mentions it in the context of a rough 'triangulation'.
But I was puzzled by the reference to Paray. Of Paray, apart from his wonderful conducting of Ravel, Roussel, Schmitt, Chausson, Chabrier etc on the old Mercury label, I only know the 1st Symphony together with some of the chamber works and many songs. Yet all those works are thoroughly French.
Andreae is surely solidly in the Austro-Germanic tradition. He writes within the traditional classical forms (both the symphony here, the string quartets, the piano trio etc), and the language is post Brahmsian. Hardly a surprise that he was a renowned conductor of Bruckner. There is surely a far greater kinship with another Swiss master, namely Schoeck, than there is with Paray?
But I'm certainly not out to pick quarrels over the issue. Maybe I've just missed out on one possible perspective on Andreae?