No, SSL uses 96 way DL connectors with 24-32 balanced circuits and Neve used 56 way Edacs with 12 circuits. Totally different connectors with different sizes, crimps and cable capacity. If the old Neve cables you have are 12 pair, two can be used for most of the SSL DL's which have 24 circuits but you need to re-crimp them with DL pins and the circuit arrangement within a DL is different from the Neve Edac version.
I notice that you have a 56 channel SSL so, some of the DL's will be 24 circuits and others will be 32 circuits which creates a bit of a problem by splitting the cable across two DL connectors.
Where are you based? If in the UK or Europe, I could possibly help but if far away, probably not.
I sell DL connectors if you want any.
Hope this helps from Jim Lassen, based in the UK
PS: This post really needs to be in the wiring menu which I am the moderator for, just saying.