Seems to me it's likely a misinterpretation of Crump's statement in reference to his recording that the FBI has the best recording equipment in the world.
I think you've got it.
If so, the reporters' next assignment should be covering the annual Miami petunia festival.
I think it would qualify them to host a talk show.
What do you have against petunia fanciers?
I can't see the reporters burying the lead like that. If the feds were monitoring the interview, with or without Crump's knowledge, that would be big news. Why stick it in a throwaway line at the end of the story?
I've been thinking that too.
There's also the lack of a source, and of details, such as which federal agency sent the 'investigators'.