It doesn’t look natural at all to me. It looks like the LH has three or four fingers “woven” under the pointer and middle finger of the RH and then resting on top of the remaining two fingers on the RH.
When I practiced with my hands, if I took the 3-4 fingers on the LH and wrapped them around the RH it felt more natural.
RH thumb is hidden. LH thumb, partially. They are locked into position by the other fingers. Hmmm...
The position he has them in felt quite unnatural.
Wish the image was a clearer.
It does make me think it is some kind of signal. I wish I knew how long that picture has been up.
Wonder if there is a directory online for hand signals...
I asked someone else how the hand positions felt and he said no prob...
So.... probably just how my hands work together. But it doesn’t feel natural, or look natural to me.
I got the idea that he had just changed his twitter picture from whatever to this one at JFK grave site with weird finger position.