I sent the RR73 but now it is clear that Thierry (FT8WW) did not Rx it. I don't know why I didn't wait for his 73. I expected he was handling the pile up and overlooked it as a nice-to-have but didn't feel it was required.
Technically it was a QSO because of a two-way exchange of signal reports, but alas not in the domain of FT-8 if we treat it as "two way exchange and two way 73" more or less.
So, I will have to try to re-work his DXpedition, again. If I can do it once I can do it again, right?
How to check his log (it is not updated very often, but seems to be updated about once every day or so, perhaps).
I got a response from his QSL manager and he wrote:
Thierry himself is not involved in any scientific work there, he is on a ham radio DXpedition... And he is trying his best under harsh conditions and environment...
That's the lesson here. This is not a run-of-the-mill DXpedition.
Good luck and remember to send sig-report not grid-square, and TX split, and ODD cycle (15/45 seconds).
