Donald Ross pointed to this article as an example of the treatment of Grice’s pragmatics in the context of rhetoric: Dascal, M., & Gross, A. G. (1999). The Marriage of Pragmatics and Rhetoric. Philosophy & Rhetoric, 32(2), 107–130. doi:10.2307/40238023

This article does not treat RT specifically, but I look forward to assessing whether Dascal and Gross’s treatment of the marriage (or at least romantic dalliance) between pragmatics and rhetoric would be altered by application of RT.
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