Dende was not at Kami's Lookout at the time.
Shortly before the Grand Minister arrived, Son Goku had picked Dende up.
Everyone who had returned from the Tournament of Power had gathered aboard a cruise ship for a victory banquet.
To celebrate Universe 7's narrow escape from destruction, they had brought Dende along to join the festivities.
So at that moment, only Mr. Popo and the Grand Minister remained at Kami's Lookout.
Had Dende been there, he surely would have wondered why the Grand Minister, said to rank second only to Lord Zeno in the entire universe, was treating a lowly divine attendant from Earth with such respect.
"Grand Minister, what brings you here?"
At Mr. Popo's question, the Grand Minister bowed. "Mr. Popo, I actually came here because of Lin Chen."
"Lin Chen?"
The Grand Minister narrowed his eyes and smiled. "That's right. Not long ago, Mr. Lin Chen took first place in the Tournament of Power held by Lord Zeno, becoming its champion. His performance was quite remarkable, especially when he later used Reverse Ultra Instinct and Extreme Intent Kill."
"Although Lord Zeno didn't inquire about it, I'm very curious. How did Lin Chen, a Saiyan, learn Reverse Ultra Instinct and Extreme Intent Kill?"
"Especially Extreme Intent Kill. That was a technique only Lord Dragon God Zalama could use back then..."
"Now I understand. If it's you, Mr. Popo, then naturally you should know that technique as well. After all, you once served Lord Dragon God Zalama."
With his hands behind his back, Mr. Popo said, "Lin Chen mastered Reverse Ultra Instinct on his own. Universe 7's Old Kai explained the principles of that state to him."
"As for Extreme Intent Kill, Popo did teach him that."
"Mr. Popo, could you tell me why?" the Grand Minister asked.