You mean like an extension cable so you can put the ram somewhere else?
If so, no. Memory is switched at a very fast frequency and the distances have to be very exact. Timing has to be perfect for memory to be refreshed. (Memory timing is measured in billionths of a second as a comparison, even back in the day)
Unlike PCIe which is serial communication. Errors can be re-transmitted. With memory, errors will likely lead to a crash. (Which is why Error Checking and Correcting memory is a thing, and slower than non-ecc memory.)