I’m actually somewhat suspicious of the overall quality of the table given how it classifies shikantaza. Shikantaza can lead to non-dual insight but is in practice more like open monitoring, though through shikantaza you can have insight of no-self and the non-dual nature of reality, but this is also possible with koan practice. They may explain more in the paper how they came up with this classification but just reading the table I’m uncertain how much info you can draw from it though to be fair much of it is right and this may turn out to just be an error or a nit.
I’m actually somewhat suspicious of the overall quality of the table given how it classifies shikantaza. Shikantaza can lead to non-dual insight but is in practice more like open monitoring, though through shikantaza you can have insight of no-self and the non-dual nature of reality, but this is also possible with koan practice. They may explain more in the paper how they came up with this classification but just reading the table I’m uncertain how much info you can draw from it though to be fair much of it is right and this may turn out to just be an error or a nit.