Searle's argument in the Chinese Room is horribly flawed. It treats the algorithm and the machine it runs on as the same thing. Just because a human brain embeds the algorithm within the hardware doesn't mean they are interchangeable.
In the Chinese Room, the human is operating as computing hardware (and just a subset of it, the room itself is substantial part of the machine). The algorithm being run is itself is the source of any understanding. The human not internalizing the algorithm is entirely unrelated. The human contains a bunch of unrelated machinery that was not being utilized by the room algorithm. They are not a superset of the original algorithm and not even a proper subset.
In the Chinese Room, the human is operating as computing hardware (and just a subset of it, the room itself is substantial part of the machine). The algorithm being run is itself is the source of any understanding. The human not internalizing the algorithm is entirely unrelated. The human contains a bunch of unrelated machinery that was not being utilized by the room algorithm. They are not a superset of the original algorithm and not even a proper subset.