Dear Shri Kaustubh Karandikar Ji,
Said Section 2 (6) has five conditions - which is cumulative in nature - to fulfill in order to treat 'supply of any service' as Éxport'.
And even if one of these 5 conditions remain unfulfilled, such service of service cannot be treated as 'Export of Services' in my view.
Based on my understanding of factual position from query, Í have given a view above is that subject supply cannot be Export of Services as it does not fulfill condition No. (iv). Your earlier post is silent on this aspect. Kindly elaborate on this.
W.r.t. place of supply argument, first, same is one of five conditions prescribed u/s 2 (6). Second, sub-section (2) of Section 13 is a 'residual provision' to determine place of supply and same is applicable only when 'the services specified in sub-sections (3) to (13)' are NOT matter of consideration. Third, from limited facts shared in the query, it is not possible (at-least, to my mind) to conclusively say 'which sub-section of Section 13' will be applicable for which part / entire services so provided.
Hence, I had limited my earlier reply on the basis of 'non-fulfillment of condition No. (iv) of Section 2 (6) of the IGST Act, 2017'.
I hope this helps you understand reasoning behind my views (shared earlier) better.
These are ex facie views of mine and the same should not be construed as professional advice / suggestion. And I respect contrary views.