swh knows the answer but he likes to make stuff up.
The magnificent eight just had to go to uniform stores and swop their red ties for a green one, a name badge, a belt and some different buttons for their jacket. Who was gonna test them? No-one; they then went to Toulouse and started picking up Neos and collecting sheds from Alice. Oh, and became managers and DCP etc.
The 744 guys years ago just did two sims and four sectors and away they went.
The rated guys going to AHK from KA only do CRM and a couple of sims and AEP unless of course they need to do a rating.
Any KA pilot can readily fly an Airbus for CX or AHK. There might just be an argument that the Triple or Jumbo involves a bit more.