IIRC 6 batteries (24 guns) were acquired, so in that case Spain was probably serving as intermediate, but it is not clear to me why it would be needed.
There were a lot of those strange deals, including transfer of the weapons to Greece (both in 1940-41 and post WW2) that were never really researched, including the fact that it is almost entirely unknown what exactly was sent in 41. (some things were deduced from German beute tables - eg. rechambered Mannlicher M.95/24 and Hotchkiss M.14/28). Other stuff was estimated to be non-standard weapons (non-rechambered French stuff, various exotics etc), but no documents were ever found either here or in Greece.