thank you bro.Welcome to the forums, newcomer!
I have a gigabyte b660m gaming ac ddr4
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According to your motherboard manual;
https://download.gigabyte.com/FileL...230411.pdf?v=82300ab5593a1ebcdadb278e44f9c45c
both slots support PCIe4.0x4 based M.2 SSD's. So the answer is yes to your question.
I would use smaller capacity(500GB) SSD on M2A_CPU for your OS and then have a larger capacity SSD on M2P_SB).