I've tried both ram sticks on three motherboards in all configurations and they fail to post. The sticks were used 2+ years in separate computers without a problem prior to using the together.
The ram are 2x 8GiB Ballistix Sport ddr4 2400Mhz
Motherboards used: Asus z170m-Plus, ASRock z270-itx ac, GIGABYTE ga-b250m-ds3h