Lol! No. Not unless I've been watching the wrong Kendo. Certainly I think some of the stances of Shotokan may come from Kendo, but I'm not an expert in Karate or Kendo history. Where the high kicks come from, who knows? I've came across Gigo Funakoshi's name in the past regarding additions to modern Karate, such as high kicks.
"Let your food be your medicine, and your medicine be your food"