Well, Commisar will just stride confidently into the Hall of Records. If Osokan guards try to stop him, he wil pretend to be outraged , and mention Drakkon`s name, pretending that he has a permission. (Perhaps he heard enough Osokan to utter a simple sentence, like "Drakkon allowed me to enter, do you want to get him angry?!"😉
Maybe sometimes outregous lies are the best? Guards may be afraid of Drakkon so wouldn`t dare to ask him about it.
The Hall of Records is indeed not public. But that's not the same as being a shoot-to-kill area, and the sudden arrival of an important personage throws them a little.
There are several Osokans on guard here, and when you stride in one of them comes to meet you. He speaks Basic, and he asks about your business here.
"Someone from the Senatorial Commission coming, sir" says the Stormtrooper commander.
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The other traders stay quiet, Lyle. The Osokan speaks.
"You want business? Hmmm. We can make you... MUCH money. But only if you have much money to buy with in the first place."
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A few minutes later, Bast gets back to you, Coll.
"The hangars are empty," he says. "Lord Vader has dispersed virtually the entire TIE force in various small clearings in the jungle around the city. He is inspecting them."
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As for Drakkon... are you talking before or after the fighting starts?
"There are certain matters involving the negotiations. It is necessary to check few facts involving the recent history of Lanzar to conclude the Peace Treaty."- Commisar will try to radiate an aura of authority, like a righteous person who is not to be questioned.
(assuming there is a slight diffrence in time between this and Galahad`s approach)
"Senator Galahad? I was hoping for a diffrent Senator"- Commisar curses -"Inform him that I will speak with him soon. Or perhaps you could engage him in conversation, Captain Trebeis?" ( Could Melkor know that Galahad`s son was a Jedi and he lost his daughter in tragic circumstances? My Aide researched the background on Senators. If he knows, he will show with Trebeis.)
Ush, didn`t we discuss capturing Drakkon before? It would likely be impossible in current circumstances, but Generals know that he is wanted alive, and it should be taken into account. Perhaps our agents could help in this.