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As you and another person described it, it sounds like the Talmud would be compared to a Bible Commentary. ***
No, the Talmud is composed of two parts, mishna covering Judaic religious law and theology, the second gemara, an elucidation and exegesis of the laws, including culture, folklore, traditions, etc.
I guess for simplicity’s sake I would describe the mishnah as what, and gemara as who and why, but it is much more complex than that.
Okay, thank you for an attempt at clarification.