Well now, something's odd here.
If Harry thinks Bob's too old, and wants to replace him with Dan, think about something.
Robert Byrd came to the U.S. Senate in 1959.
Daniel Inouye came to the U.S. Senate in 1962.
That's not much of a difference.
I think Harry's letting something go to his head, and that there's some rude surprises in store for Harry, as there always are for those who count their chickens before even the eggs pop out, much less hatch.