You are right on all counts about Celi here....
I prefer Bernstein version to the two Celi version in Beethoven Egmont yes ... 😊😁
But the young version with Berlin has nothing to do with his mature notion of the musical time which he exhibit well with the Stuttgart version like you know for sure...
And yes someone can be a genius in intemporal Bruckner and less convincing in mundane incarnated warring Beethoven...
i prefer Furtwangler to almost all in Beethoven because his notion of musical time is at home with Beethoven like Celi concept of musical time is at home with Bruckner...
Bernstein is a so great genius because he can use any of these two way to create musical time appropriate to each composer... Like other great maestros geniuses with him...
Georgiev one day said that all maestros try to imitate the temporal musical direction of Furt. without succeeding completely , I think he is right...The way musical time is out of mundane measurable time and emerge from music itself without being objectively "measurable" at all is fascinating experience with Furt and sometimes with other maestro in some composer...
Celi is a singularity among maestros, because he impose more than any other his own concept of musical time, which is not the Furtwanglerian one, i described above and Celi impose it on every composer...Then we listen Celi fascinating or boring interpretation, it is only dependent on our ability to see what there is to see...
When we listen Celi there is no more time passing, nor the musical time in the Furtwangler sense, nor measurable mundane time, there is only a single moment of variable duration where eternity pour in an everlasting moment like water pouring in a glass andoverflowing or a moment of time elevating or stretching itself to eternity...What is miraculous in his Bruckner is the way Celi never lost intensity in this everlasting moment like in the Egmont case...Time is almost vanishing with him or become transparent so to speak, especially in his Bruckner at home interpretations ....it is a Buddhist notion of time and anyway Celi was buddhist pupil....
He is the only maestro obsessed by time in this sense.... He cannot be judged without be understood...He is fascinating if we understood him , boring if we dont try to understand him , more boring in Egmont for sure, not boring at all in any Bruckner... Unique...
Thank for your kind words...
i am not a musician at all...
I dont know music language by the way, i attempt to decipher it with my ears/brain/body thats all...