I’ve been keeping track of mine and a friend’s Best Friend interactions to try and figure out the new Lucky Friend Rate.

Although the dataset isn't too large yet but it looks like the new Lucky Friend chance is around 3% or about 3x as high as before.

Also it seems that it only matters that one of the friends is level 70+ for the bonus to take full effect.

If you want to help with this you can either DM me or post your own data here on this post. Please try to keep interactions between level 70+ and under 70 players separate. If you yourself are under 70 only keep track of interactions with players 70+.