B & M Tells

[Jiminy]

i caught a replay of the 2004 main event, and Daniel Negreanu is faced with a tough call deciding wether to call an all in with top pair of queens with bottom kicker. He sits and thinks and then comes out of no where striking a conversation with the raiser. He asks him what country he is from and then goes on making jokes about European players. He ended up correctly folding.

My question is what did Daniel pick up from the conversation. In general, if the raiser is talking back at you does that mean he has a hand and if hes sitting still like moneymaker and not acknowledging you then hes beat? What specific tells can you pick up by starting a conversation? It doesnt seem like it would be reliable enough to go on, because a bluffer might act overly friendly.