I think the winning combination matters in a player's bet when it comes to winning a progressive jackpot. In most cases, a specific combination of symbols needs to appear on the reels in order to win the jackpot. The winning combination may be different for different games, but it is usually a very rare and difficult combination to achieve. The chance of hitting the winning combination is usually very low, and as a result, the jackpot can accumulate to a large amount over time.