Complex sentence: Afterwards, the team surpassed the Memphis Grizzlies (4-2, in the second round) and the Houston Rockets (4-1, in the Western Conference Finals) to achieve the NBA Finals for the first time in 40 years.
Split into simpler sentences: Afterwards, the team surpassed the Memphis Grizzlies (4-2, in the second round). The Warriors then defeated the Houston Rockets (4-1, in the Western Conference Finals) to achieve the NBA Finals for the first time in 40 years.