The conversation between human and AI assistant.
Why did Darth Vader step on Obi-Wan's robes after killing him?
Interesting... but why did he need to make sure that Obi-Wan was dead when he had just skillfully defeated him in battle?
It's possible that Darth Vader was dealing with some lingering doubts or fears about Obi-Wan's power, especially given their long history together. Additionally, he may have wanted to send a message to the other rebels who were present that no one would dare stand against him.