Listening to the audio, he's saying it in jest and Huffington laughs along (albeit nervously since it wasn't a funny joke). It's just reinforcing a stereotype that women tend to talk a lot.
it would _seem_ that his attempted defense is that he claims he was trying to say "having more women on the board would lead to more discussion" -- but that appears to be his defense, it is unknown if that defense would actually be true at all...