In Punto Banco Baccarat with a 6-deck shoe, the conditional probability that the banker wins given that the player's initial two cards total 5 is approximately 54.16%. This calculation considers the specific rules of drawing and standing for both the player and the banker based on the total of the player's initial hand. The banker has a conditional advantage, with approximately a 54.16% probability of winning. This probability accounts for the complexities of drawing rules based on the player's hand total, ensuring a nuanced approach to strategic betting in Baccarat.