I think I see what you mean. Bidet snubbed Milley (the military guy) as he walked past to talk to Maxine Waters and Bernie. Milley made the hand gesture like, "Don't worry about it" or "It's OK" probably because someone who's not in the video, asked him if he wanted to talk to Bidet or wanted them to fix the situation for Milley?

Yeah from what I see, seems like an awkward "exchange" between Bidet and Milley. Not sure what Bidet was doing, talking to that lady in green suit (I'm colorblind and it looks green to me...?) while pointing at Milley, or at least in his direction like, "I don't want to talk to this mofo so you better tell him to back off!"