I know they used Heenan and Monsoon a lot to audition potential “announcer / commentator” talent.
They would always have the guy cut one babyface and one heel interview.
Heenan would always give them a hard time saying things like, “How did you get this job? Do you know someone with power?”
He said that most would come back with very stupid replies.
You have to be more than just a sportscaster to call a wrestling match or interview wrestlers.
You need personality, “schtick,” or boobies.