I think that coach of U21 and coach of NT have to work together. In a small nation in terms of players as South Africa, we can’t focus only on building players for the NT.
It’s normal that there is a gestation time for players between U21 and Senior team. And sadly, players aren’t train after 21. So let them play in U21 if they have the level for.
I don’t want to weaken U21 team. But let’s work together to prepare best potentials to be part of NT in the future and to have the best players available.