While the 432 was a memory-to-memory CISC and the 960 a classic RISC, I do think they have a lot in common technically. A key difference is that the 432 uses positive/negative offsets to separate raw data and capabilities while the 960 had an optional bit 33 to do the same thing, which makes it far simpler to mix data and capabilities on the stack.

The "operating in hardware" is microcode in the 432 but RISC-friendly in the 960, but it is still there.

I am talking about the original 960MX here. Most of these features were dropped on the following 960 models, if I understood correctly. Those do not indeed have much in common with the 432.