I dont think so

yes there are 2 separate fights/exhibitions shown
1 is for sure Joe Lewis, but the second is'nt Bruce, his
frame is too big where Bruce's was a slim frame,
plus if you look at the legs, they look like tree trunks
but i have no idea on who this second guy is, plus as far as
i recall Bruce only demostrated with his pupils, unless i'm wrong
but one thing for sure the guy in white is not associated with Bruce
so i doubt very much it is
Take Care
Robert