Invoke HungryFEED without Shortcode

I have a shortcode that I want to use to dynamically offer an appropriate RSS feed URL based on a location custom post type on my site. This shortcode works on its own:

[company_field key=”company_blogrss”]

However, due to limitations of WordPress (https://codex.www.ads-software.com/Shortcode_API#Square_Brackets) it won’t work like this:

[hungryfeed url=”[company_field key=”company_blogrss”]”]

Is there a way to invoke HungryFEED using something other than a shortcode? Perhaps a string of HTML that would allow this to work?

https://www.ads-software.com/plugins/hungryfeed/