Ali was a hypejob with ABC and Cosells magnificent nuthuggery brainwashing viewers with missed punches
Of course he respected Big George's power, but he also knew after 5 Rounds of 'windmilling his punches' George would be gassed. Remember, Muhammad Ali took Roy 'Big Cat' Williams with him to Zaire for sparring. Roy, at 6' 4" and 225 lbs., when given the room, could hit harder than any Heavyweight out there with his right-hand. When Muhammad took Roy's punches in sparring (while laying on the ropes), the 'fight plan' was devised.
Of course he did... the whole tactic was based on that. Ali could take a hell of a punch, but he knew better than to stand and trade with George.
Of course he did. " big" George foreman wasn't known for his boxing ability, but rather known for his power
Ali reportedly said to his corner that Geroge's punches "weren't that bad" -- meaning, probably, that they were manageable.