Ok, the BC 2 sits on the motorised stand turntable under the tv, the tv is the master and the BC 2 the slave in the ML setup.
Looked at the BC 2 menu, and there is nothing listed or activated, just a reference to use the TV for timer setup.
The tv does not have a numeric system mounted, I use 2 x digital boxes, 1 for terrestrial french tv and the other for satellite english freesat tv, both these do not have anything programmed.
I am at a complete loss! I will give it another go tonight, and maybe reboot the tv and the BC 2 tomorrow, but I don’t think that should have any effect on the system.