The only "synergy" that has come from AMD-Xilinx is that AMD took a (relatively simple) DSP for machine learning that Xilinx had built and put it into their new

The only "synergy" that has come from AMD-Xilinx is that AMD took a (relatively simple) DSP for machine learning that Xilinx had built and put it into their newer CPU lines. That's still better than Intel-Altera, which basically didn't integrate at all, despite having grandiose plans.