What does the elephant and horse mean with debates?

It sounds like you might be referring to a common phrase or idiom. However, "elephant and horse" isn't a widely recognized phrase in the context of debates.

It's possible you're thinking of something else, or there might be a specific context where this phrase is used.

To help me understand what you mean, could you please provide more information? For example:

* Where did you hear this phrase? Was it in a book, movie, conversation, etc.?

* What was the context of the phrase? What were the people talking about?

* What did you think the phrase meant?

Once I have more information, I can help you figure out what the phrase means.