Tim Burton doesn’t know what he and Johnny Depp talk about.

The director - who is working on Alice In Wonderland, his seventh venture with the actor - admits he is regularly left perplexed when they finish discussing their work.

He said: “What do we talk about? That’s the thing - we don’t really know. It’s very nice to have someone that you can have a completely abstract conversation with and leave the room, feel like everything’s fine, and then realize that if you pick it apart, you have absolutely no idea what either of you said.”

Despite their close working relationship, Tim admits he still doesn’t know Johnny very well.

He added to MTV News: “That’s a sign of knowing somebody and connecting with somebody. I don’t pretend to know him. If I don’t know who I am - this sounds like a bad therapy session - but I don’t pretend to know anybody else. That’s what keeps it all cool.”