Defer only means to put off until later. There's no delegate meaning.

http://dictionary.reference.com/browse/defer

2nd definition further down has this:

verb (used without object), deferred, deferring. 1. to yield respectfully in judgment or opinion (usually followed by to): We all defer to him in these matters.

OK I agree that's closer to delegate, while not the same. You couldn't substitute 'delegate' into that sentence, for example.