Here’s the thing PWB, if you are going to get rest for your starters you don’t want 3 or even 2 reserves in at the same time. This of course assumes we only really play 7-8 players. To me, the number of minutes the starters play together is far less important to when these starters are on the floor together. The end of the game is the obvious time.
It’s really difficult to get them 20 minutes together. You could start 5 minutes out of the gate with starters. Then give each starter a 2 minute blow( wipes out next 10 minutes of half). Put starters in next 5 minutes. Repeat in second half and presto you have 20 minutes. IMO, this would wear your starters out and would be unrealistic due to foul trouble, off nights, and quick unnecessary line up changes when an alternative line up is working. Damn near impossible to consistently increase minutes together as a unit.
When he says get the best players on the floor, I believe that to be in reference to the most playing time.