Thank ye!

I wish that show had been longer. So good. There was also some other references in there as well.
As for the floatplane debate... There's eight CANT's as each Guissano could carry two. And while six Zeros is absolute overkill against them, that's still eight extra bogeys to deal with while trying to contend with all the AA. A shitty plane with shitty guns is still something that can get in the way.
It's less 'protect the bombers' and more 'clear the road'.
That's the reasoning I went with when writing at least.