This is pretty hard to believe. 65 slides! And there are so many things wrong with each slide: horrible colors, too much clutter on slides, fonts too small. Just to name a few.
Each slide would have to take several minutes to get through, by which time everyone is zoned out and does not get the message. And, with no context, the slides can not be understood by anyone who was not present.
These are nice examples of what not to do.
Three sample slides for your contemplation courtesy of a 65-slide PowerPoint deck from the world’s biggest brand.