Tyson VS Douglas alternate angles

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I stumbled across this video which gives clearer viewings of the knockout of Tyson by Douglas and noted a few things.
Firstly I thought it showed a fascinating shot at 1:15 of Tyson leaving the ring which I have never seen before and just before he does Tyson raises one arm in the air in what seems like an acknowledgment to the crowd and leaves the ring to a kind of awkward sounding applause, was this a display of sportsmanship from Tyson?

I thought the angle of the replay at 40 seconds in really highlights the brutal nature of the knockout of Tyson; fast, hard, accurate, jolting punches right on the point of the chin. Who could have withstood that?

Something else that I think I noticed from the replay at 5:32 which shows the whole body of Tyson as he was knocked out is that is appears from the combination Douglas threw; a right uppercut followed by a weak right hook, a left hook, a straight right and a final long straight left, that the last straight right would have been sufficient to send Tyson to the canvas even without the final left ever landing.
Look closely at 5:32, Douglas had sent Tyson completely off balance and Tyson was actually on his way to slowly falling flat on his back before the final left was even thrown, the left did serve to send Tyson down twice as quickly however, totally scrambling his senses in the process.
Despite this I do not think the right would have been enough to knock Tyson out, if the left had missed Tyson would have probably gotten up and been knocked down again afterwards.

I find myself drawn to the Tyson Douglas fight very often and I'm not even completely sure why, but I know it still makes me cringe and feel something strange inside every time I see that combination put him down.