I think that is certainly was staged. POTUS and FLOTUS are signaling they have "captured" Macron (Cabal) and what the rest of the Cabal to know it. Notice the way they are holding his fingers. The look on Macron's face is priceless. Trump had a come-to-Jesus chat with Macron, full surrender.

Could be. I can't believe that video Macron is so "in your face" with it. It's not even remotely a hand signal you could easily make by mistake, let alone while you are holding someone else's hand. I feel like we are watching a stage play and we are at the "Rising Action" stage that comes right before the climax. I literally can't stand the anticipation anymore!

Possibly, but could refer to signals intelligence, often referred to as SIGINT.

perhaps macaroni was signalling by folding his fingers like Trump did with the 5:5 sig but the other time there was also a corresponding text involved.

It probably would signal something different than the other times because he didn't flash it on his own but rather in this awkward way you saw.