"I think what's sometimes forgotten in all of this is that MACC in effect combines the function of two units, it performs a TMA function working a/c from departure (about 2500ft) all the way up to an AC function at FL285 and for descending a/c up to FL300+. It means all controllers combine both a TC and an AC function at the same time. "
Doesn't Scoacc do the same?