Conversation so far:
Who was an opponent of wagner?
like Debussy.
any one else?
Gioachino Rossini.
who supported him?
was positive.
For a time, German musical life divided into two factions, supporters of Wagner and supporters of Johannes Brahms.
was brahms one of his competitors?
supporters of Johannes Brahms; the latter, with the support of the powerful critic Eduard Hanslick (of whom Beckmesser in.

Question: what else can you tell me?
Self-contained rewrite: Other than Brahams and Edward Hanslick what else can you tell me about the opponents of Debussy?