Systems and method relating generally to data processing, and more particularly to systems and methods for utilizing multiple data streams for data recovery from a storage device. In some cases the systems include a low density parity check data decoder circuit including at least a first data decoder engine and a second data decoder engine each electrically coupled to a common circuit. The common circuit is operable to: shift a combination of both a first sub-message from the first data decoder engine and the second sub-message from the second data decoder engine to yield an shifted output, and disaggregate the shifted output to yield a third sub-message to the first data decoder engine and a fourth sub-message to the second decoder engine.