Thanks for your input and time on it all, I definitely understand the issues with it, found my self in the depths of YouTube for a while there looking at similar situations. Oil still seems to be burning, though the car has done barely any driving at all in the last week, other than one or two very local shop runs and one run to the airport and back.All good news really then.
I would think that oil is still burning off, and yes, idle is always better for allowing it to pool/gather.
The biggest problems when over filling a diesel engine with oil, is that whilst the crank is submerged in oil, beating through the oil as the engine runs, causes bubbles in the oil. This aerated oil can't be pumped efficiently, or lubricated efficiently. This causes extremely concentrated hot spots at various locations, roasting parts.
The fact that oil is still burning, is a very slight concern, but we need more time to see how it progresses. It still seems like you may have got away with it.
Will keep monitoring, and see how it is over the next week whilst I am home.