The force of the blows Louis lands on Galento in the 4th look truly murderous and sickening. I get the feeling he wanted to kill him at that point. I've been told Louis and Galento eventully became friends. I'm not so sure, Watching the interview I know they both looked respectful with eath other, but I get the feeling Louis still harboured some ill feeling toward Galento. After the racist comments etc and I believe he called Louis's home and made comments about his wife.
It seems that they did become friends later in life. Louis could ocasionaly be found at Tony Galento's bar chatting with the owner.
Whilst Janitor is almost certainly spot on I feel you have a point - they may have been friends at that point but i'm pretty sure he wanted to sell his pal out on tv... See him shaking his head when he's talking about Galento calling him up and that, living it again.