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The last third of the paper, starting with the final sentence of the section 'Summary of Wave Separation and WIA' is, riddled with errors of interpretation and, more importantly, contains a number of false factual statements that need to be corrected. Instead of dealing with these errors chronologically, I think that it is better to point out the fundamental errors first and then to deal with their sequela.  (A note on notation:  In their paper they use RWC to refer to the reservoir wave concept whereas we tend to use 'reservoir wave hypothesis'. As a convenient compromise I will use the abbreviation Pr for reservoir pressure. pressure except when quoting from their paper when I will us their notation $P_{res}$.  We both use the abbreviation iFR for the instantaneous wave-free ratio.