What was Eric Trump's viral hand gesture at father's inauguration? Did wife Lara ask him not to do that?

A video showing Eric Trump changing his hand gesture after his wife Lara whispered to him at the inauguration ceremony has sparked online debate. The hand position, similar to ones used by Donald Trump and Angela Merkel, has led to speculations about its significance, including connections to anti-Illuminati symbolism. When Angela Merkel was asked about her hand position, she said it was spontaneous as one often wonders what to do with the hands at a meeting.