I am wondering if anyone knows if the CAC-1170, Active Mini DisplayPort (1.2, aka Thunderbolt 2) to HDMI 2.0 Adapter is compatible with the appropriate Mac Pro 2013 (Family 6,1) ?
Mini DisplayPort 1.2 is not Thunderbolt 2. The connector is the same but the technology is different. Keep that in mind. It’s like saying USB-C is the same as Thunderbolt 3 ;).
Based on the above articles I would say yes CAC-1170 should work for your setup.