Thank you for your reply.
I forgot to add; what pulls me towards not replacing
the chain, is that there also is a sprocket on the crankshaft, and I'm definitely not going to replace that, so there would in any case still be at least one old (possibly worn) part left.
Besides, my rocker cover gasket is leaking, and I'm getting the odd rattle on startup - probably CCT. I'm having a tough time deciding what to replace and what not. Some say the rattle on startup is nothing to worry about, but I would also hate to replace just the gaskets only for the rattle to get worse soon after. If the tensioner wasn't so darn expensive from Audi, it would be a no-brainer.
But the complete overhaul is quite a job! The sump has to come of to replace the oil pump, the oil pump chain requires the timing belt to come off, and while that is off, I could might as well pull off the rocker cover and replace the CCT and chain.
Ooohh, decisions! Think I need a cold drink!