Is it possible to see 2 numbers (2 gauges) in a radial gauge chart?
No, but you can have 1 search generate 2 charts (or more) using the new "Trellis" feature:
thank you for your comment
@matansocher, do you have a mock screenshot of what you are expecting?
You might have to build your own custom visualization. https://docs.splunk.com/Documentation/Splunk/latest/AdvancedDev/CustomVizTutorial