[oiuygtfrtghyju]

I had a similar experience - I interned at a government organisation that only recruited at Oxford/Cambridge because they wanted "only the best".

But it was such a crap place to work they their actual hires were from 3rd rate institutions. They would have been better focussing their recruitment on them. But that would mean admitting there was a problem - so much better to convince yourself that the Oxbridge grads all went to do PhDs instead.