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The noise from the timing chain could be a few things.
It may be the timing chain itself has stretched to the point where the tensioner can no longer keep proper tension on it. It could also be a tensioner issue, the tensioner is spring loaded but it's main operation is hydraulic, these tensioners can start to stick or the spring become weaker as they age. This engine also has variable valve timing on both cams, bad cam phasers can cause timing chain noise on startup also.
The oil in the coolant could be caused by a leaking headgasket, cracked head or block, but it may just be the oil cooler. If the oil cooler ruptures then it will push oil into the cooling system.
The high oil consumption could be valve seals or a piston ring/cylinder wall issue, but it may be the turbo. If the seals in the turbo fail it can push oil out the compressor section into the intake tract or it can push oil out of the turbine section and directly into the exhaust. A compression and leakdown test can be done to help determine the health of the engine, and the turbo, exhaust and intercooler tract can be checked for the presence of oil from a leaking turbo.