Don’t know if it’s still the case, but classical stations used to require their hosts to have extensive knowledge of the music. Classical isn’t a format just anybody with broadcast experience can do well. The listeners will be able to tell, and they’ll let you know about it. A handful of classical stations have tried to hire jocks from other formats, and it has rarely gone well. My suspicion is that Lara Downes had the knowledge while the other applicants didn't.
I will say, however, that one exception to the extensive knowledge requirement would’ve seemed to have been the Sony/Warner satellite delivered classical format from the 90’s. When I moved to the KC area in ‘97, KXTR 96.5 had been recently sold by Ingram to Heritage Media, which immediately began cutting costs. It replaced most of its local hosts with the SW network's programming, and the listener complaints went through the roof. It played shortened versions of the pieces, and the announcers couldn’t properly pronounce some of the composers' names. It eventually switched over to the Beethoven Network programming, which, I seem to remember, originated out of WFMT in Chicago.