Megyn Kelly got approval from higher-ups at NBC before launching her hair-raising attack on Jane Fonda, Page Six has learned โ€” but weโ€™re told that prominent members of the organization were then stunned by how far the broadside went.

Peacock Network insiders fear that the take-down โ€” in which Kelly dredged up Fondaโ€™s โ€œHanoi Janeโ€ episode to argue that the actress was in no position to โ€œsay whatโ€™s offensiveโ€ โ€” will make it even harder for Kelly to book celebrity guests on her show in case they suffer the same fate.