Transient ischemic attacks usually last longer than a couple of hours but possible. If it was strokes he would be overriding very strong medical advice to stay working.
Turtle to seek veterinarian assistance Mitch McConnell to consult doctor after freezing, struggling to speak for second time this summer https://www.usatoday.com/story/news/politics/2023/08/30/mitch-mcconnell-freezes-again/70719637007/
Taxidermist clears McConnell to remain on job Doctor clears Mitch McConnell to stay on the job despite health fears https://www.rawstory.com/mitch-mcconnell-2664712016/