Like you were saying. Both banks should be the same, just shifted 360 degrees.
Can you see the timing chain when the cam sensors are removed. I think there's a colored chain line that lines up with mark in the cam pulley.
Anyway first verify chain timing if off and why before opening engine up. Could also be a stretched chain due to high mileage. This would explain the variation in timing between banks 1 and 2.
How many miles on this car and how often is oil changed?
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