That’s pretty much what he is saying, that he was enrolled at a time when Obama was supposedly enrolled but never knowingly crossed paths with him nor did any of the classmates he knows from those years, at least none whom he asked about it.
As for who coined Obamagate I am pretty sure it was coined by this site years before he did, and other sites had him pegged as well. It was obvious he was bad news when Kerry pulled him out of his arse in 2004 to give the speech at the convention and people brought up how he beat Ryan in Illinois- by unethically obtaining Ryan’s supposedly confidential divorce records.
It was also obvious when we started hearing about a fresh, honest young politician from Chicago hitting the national stage. Chicago has long been a political swamp. Clean politicians don't magically arise from there.