Obviously it's not the first time.
The start of Cleveland Cavaliers and Golden State Warriors conference dominance start on 2015 playoffs where LeBron James came back on his original team and Steve Kerr named as rookie coach for the Warriors (Season 2014-2015). Since then, both teams are having a good playoff run each year and always meet at NBA finals. But the dominance is much more noticed at the Warriors especially when superstar MVP Kevin Durant joined them turning them to a more monster team.
And now both teams are downed by 2-3. Let's see if they will able to breached their respective challenges as their opposing teams are competitive too.
Can we see again a same team in the finals? Or the streak will now be ended by Celtics and Rockets? Let's wait...