I personally dont think that there can be much doubt that this was a
QSO,between LDO and ZJ, with ZJ having a remote Tx at ZZs location. If there
had been a 250 mile(dist. ZZ to ZJ I belive) switch line between them, when
John identified Peters message he would  have pushed the transmit button! to
reply. Since he did not have this land line he simply asked ZZ to push the
button via an 80 m link,a pretty fine distinction in my opinion.What do you
think ?  73s Laurie.