2010 AUDI A4 Quattro Premium Plus S-Line with possible bad timing chain?

What is your question?

I believe my timing chain is going out, but I wanna make sure before I start buying parts since AUDI parts are expensive. I noticed my car took way too long to start up, it usually starts up with one press of the silver circle or start switch whatever, but it took me holding it a few seconds which is odd. I had a check engine light come on and while that came on it seemed like my cars timing was way off, I'd press on the gas and it would take 2 to 3 seconds to go anywhere so a red flag in my head went off so I parked the car, turned it off, and had it towed. The codes are p305400 and p001600. I believe the second one is specifically about timing. Is this most likely a timing chain? What parts should I buy or what else could it be? What could also be wrong if the timing chain is bad like could the valves be bent and how do I check all that stuff? If I do replace the timing chain, what's some other parts I should replace in the vicinity? Thanks ahead of time!

What makes this problem better or worse?

I don't know! I'm scared to turn the engine on if it is a timing chain!

How long has your 2010 Audi A4 Quattro had this problem?

A day or so