Are those frequencies providing any data you don't know about? For example, is it next to a closed or secret frequency where software or an AI may be able to infer about the closed frequency based on the one mentioned?

Or, consider this: Radio A receives static-sounding signal from Radio B. What can you infer from the strength of that signal or other parameters? Could you infer about physical presence between the two? What if it was an agent, making hard, cost in-effective things now cost effective?