whoever the real nakamoto is , it's clear that he/she was/is very paranoid of government and wants nothing to do with bitcoin as soon as government starts asking questions.
He disappeared from public view before that. His famous "hornet's nest" post (his second last, made in December 2010) was in response to a PC Magazine article about Wikileaks and Bitcoin.
https://bitcointalksearch.org/topic/m.29280
He appealed to Wikileaks not to use Bitcoin, believing that an association between the two could destroy Bitcoin.
https://bitcointalksearch.org/topic/m.26999
Gavin did not announce the planned visit to the CIA until April 2011, over 4 months after Satoshi disappeared from public view.
https://bitcointalk.org/?topic=6652.0
He didn't announce it publicly but it appears he announced it to Satoshi before then.
He did announce it here, and actually saw this as a preventive measure against having bitcoin considered something invented to break the law. Gavin wasn't in any way "approached" he got an invitation to talk at a convention i think.