Two piglins that are close to each other will pick up a gold ingot when it is dropped between them

When two piglins are close to each other (when they are in blocks next to each other or closer) and you drop a gold ingot between them both piglins pick up the ingot at the same time and admire the ingot. After the piglins finish admiring the gold they each give you something even though you dropped one gold ingot between the piglins.

This is a really crude diagram (smiley face is a piglin, the gold star is the gold ingot, and the red star is the thing that the piglins give you after you barter with them):

     step one:

      

     step two:

     

     step three: