Thread:Peep4Life/@comment-33389147-20190406220712/@comment-27518422-20190406232921

Hard one, as these ways sort of negate what we know of the characters, but these are what I got:

Both Batman and Sherlock have wit when they want to, so I could see them having a war of words that gets way too heated.

Or, have Batman lurking in the shadows of a crime scene, and Sherlock knows someone is around, and sort of attacks Batman upon discovering him. Bit farfetched though as Batman is the ultimate sneak.

Maybe Sherlock figures out Batman and Bruce Wayne are one and the same and decides to release that information or holds it against Batman, drawing him out.