I have a feeling he was testing the water with Kathie Lee. I think he could have drugged her like the other women. I think he chose not to because, if you’ve watched Kathie Lee on her programs, she comes across as outspoken (to say the least) and not one to keep quiet. I think he realized she wouldn’t be a pushover like some of the other women. He didn’t want to risk it with her.
He wasn’t testing the waters, he was already using the drugging/rape technique, he just didn’t get to use it on everyone, for instance Lou Ferigno’s wife was merely assaulted, not drugged and raped.
Some of the women were sexually assaulted, not all were drugged and raped.