How much spacing in terms of mm is between 2 graphic cards slots

A graphics card is around 55mm to 59mm in width Slot Graphics Card

mm Slimmer Battery, 3561 mAh, 4700 mAh Bigger Battery Unique Card Slot, No, No Connectivity GPRS, Yes, Yes EDGE, Yes, Yes 3G, Yes

odd slot That is, two slot card must be not thicker than Inch So, which part in the spec is a lie? I think these additional might be critical for me

missouri gas station slot machines 320*129* mm RTX 3060, GDDR6X, 1800 MHz, 10 GB, 320*129* mm RX 5700 xt, GDDR6, 14 Gbps Effective, 8GB, 260*117*50 RX580, DDR5, 1366