But they can’t sense the Sith Lord sitting across from them.
If you’re wearing a black hood, calling yourself Lord Sidious, and you’re making a collect hologram call to the Sepratists, that’s kind of suspicious. Lego Star Wars made a joke about Palpatine forgetting to take the hood off in front of the Jedi.
I don’t understand. He’s not making these calls with the Jedi in the room.
As for why they can’t sense him, they do sense the dark side of the force around the Chancellor. But It’s a far cry from “he’s an unsavory man” to “the guy running the galaxy is also the Sith lord we’ve been hunting”.
It’s called hiding in plain sight.