Mitch froze again

For the second time this summer Mitch McConnell has frozen while speaking. It happened again earlier today in Covington, KY after a reporter asked about his thoughts on his re-election bid in a few years.

Is this a sign of a stroke? What kind of medical situation is likely to blame for these kinds of events?

https://video.twimg.com/ext_tw_video/1696965217912066048/pu/vid/1280x720/NA3JSaoA7qyGySVz.mp4