@Ltek Yes, both values come from the same device. I am using the Sonoff SNZB-02 sensors.
This is a zigbee sensor, and I am using Zigbee2MQTT to connect the sensor to Home Assistant. There is a setting in the Zigbee2MQTT page called “Home Assistant legacy attributes”, which will send the humidity value as an attribute for the temperature entity. So you can have both values stored in the same entity (which helps for displaying them both in the same row of the Flex-table-card). There is more detail on this here:
If you don’t have this option available for your sensor, you can always just make a new template sensor, which has the other values you want to display in the table as attributes. For example this might help with that. Documentation for the template sensor attribute syntax is here.