[Den-O]

Considering both the 009 and 009-1 mangas were created by Ishinimori, and both feature cyborgs I don't see why you can't connect the 2. No they don't take place in any sort of shared continuity. Primarily because 009-1 takes place in an alternate history where the cold war is still going. However, it should be mentioned that in the original 009-1 manga that some of the cyborgs from 009 DO appear in just a couple chapters. There is a connection if nothing else than through the creator himself.