The tik tok video of Barron saying something to Joe during the handshake is deceptively edited.
What appears to be Barron leaning into Joe and saying something is just Barron leaning over to shake hands with Kamala. The handshake with Kamala was 'conveniently' cropped out. At the end, Barron looking back, could be for many reasons, not necessarily looking at Joe. Compare the videos related and decide. I think anons were fooled and helped along with shills trying to sell the story.