Thanks for your quick reply.
I seems that after editing my previous response a few times to correct spelling and improve wording, it vanished. This is probably some automated action. With this response I let you know it exists and focus a bit more.
After looking at the instruction set, I realized that what I suggested in my response is essentially what is currently the “rescue” operation :).
It seems my line of though regarding addressing is apparently converging with what is already happening. Now I wonder why the “rescue” operation would not be made to operate on a larger belt than all other operations. Is having a larger belt very hardware intensive even if only rescue can operate on the oldest half (or even just +8 or +16 positions)?