Four cores and two burners: How2 DVD1->DVD2?

Because of the intermediate decrypting step, is it simply impossible in Windows to go straight from one DVD to another? I guess I was (wishfully?) thinking that someone had a program that would act as a “pipe” to and from DVD Decrypter so you could skip the intermediate step of going to the hard disk first.

With CloneDVD and Alcohol 120%, you can go from DVD to DVD, but it is recommended that you go to the Hard Drive first.

Cool! But: I live in fear of bloatware. Does it require the .NET Framework? Other immense / virus prone dependencies? I could only glean the most basic system requirements from the FAQ.