It might have been technical difficulties that occured when Larry King was going to ask Lieberman about "The Kiss." It probably was technical difficulties that resulted in Lieberman not being able to hear Larry's question so they had to end the segment.
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There's a chance somebody from the Lamont campaign tampered with King's equipment too. I'd ask Sean Smith about it, but he's been fired. There is another possible explanation: It could have been that Holy Joe wanted no part in having to answer the fact that he got a smoochy from Bush.
I report. You decide.
(h/t Tim)