What you saw on the BBC Combat Pilot Programme was a ‘Creaming and Streaming’. That used to happen after AFT. Nowadays everyone moves from AFT straight to TW (standby for ENJPPT to reappear) so the C and S is redundant.
The role disposal has always happened after TW. The game is at the discretion of the graduates or their course commander or both. The only constant is that alcohol will be involved and someone will get spoofed at some point.
BV