Here is a good snippet with just the incident from the embrace through LG whispering in JK’s ear:
https://twitter.com/M2Madness/status/1036207956675710976
General Kelly touches his face at 21 seconds in, followed by Lindsey Graham reaching down to his pocket, checking if the flap was down, then reaching down to the bottom of his pocket and feeling something distinguishable inside.
I think this was possibly a drop by Huma to LG ... there may have been reciprocal of LG dropping something in Huma’s purse. But something (one or both) happened here IMO.
And the generals will have watched any videos or security camera videos of this event. They know what happened.