These two clips both demonstrate Ali's 'supernatural' prowess, how his ability in the boxing ring makes him 'the greatest' of all boxers. In the first clip, Ali laments that the human eye couldn't see his knock-out punch of Sonny Liston. He notes however that the device of the camera--the slow-motion camera--*was* able to record the punch: the narrative replay of the bout slows down the action so that we, the viewer, can relish (or grieve for) Ali's magnificent final blow. In the same way, the narrative of the Iliad 'slows down' the spear throw of Patroklos against Sarpeon (16.477): heroic narrative expands and compresses the action as a response to its audience. This is the shot we *really* want to hear about, and so the heroic song correspondingly expands the narrative.
In the second clip, notice how Ali reverts most often to the natural world to express his heroic metaphors; in the same way, the Iliad uses the metaphor world of nature as a backdrop to the battle scenes. Ali's 'been chopping trees' to prepare for the flight -- this metaphor reappears exactly in the Iliad when Sarpendon (the Sonny Liston of the Iliad) "falls like some oak or silver poplar or tall pine to which woodsmen have laid their axes upon the mountains to make timber for ship-building." In each case, the loser has been 'chopped down' by the hero of the fight.
