I found this video of the burial of the soviet sailors incredibly respectful: https://www.youtube.com/watch?v=kFWMo7aHDRo&noredirect=1
I wonder how much of it was done as a hedge against the time when this would eventually come out. "Sure, we tried to steal your sunken sub. But look, we played nice."
This sort of mutual respect and tradition between enemy aircrews is not uncommon.